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I Thought It Was a Mountain AI: You Climb a Hill, and It Is a Dinosaur

You run through a misty flower meadow, climb a little mossy hill and catch your breath on top. Then the camera pulls back: the hill is the head of a giant dinosaur, its eye opens, and it lifts you into the sky.

The Mountain Dinosaur trend's template clipTrend clip
  • 1 photo you add
  • 24 s clip with sound
  • 16:9 like the original clip
  • No watermark

No prompt to write: Add your photo and tap once

Create your own

Ready in up to several minutes · 374 credits

The I thought it was a mountain AI trend turns the Minecraft meme into a dinosaur AI video: you climb a mossy hill, and the hill is the head of a giant dinosaur that wakes up and lifts you into the sky. "I thought it was a hill... it wasn't." You need one photo of you or your pet.

Also called It wasn't a hill · The hill is a dinosaur · Tamed a dinosaur · Dinosaur hill reveal

Example

What the Mountain Dinosaur video looks like

Both clips are the trend's AI template clip: an AI-made woman, not a real person, with the clip's own sound of wind and birds. Your video puts you or your pet in her place in the same shots. No two runs come out the same.

The trend's template clip, 24 s

The trend's template clip: an AI-made woman runs through a misty flower meadow, climbs a mossy hill, and the hill turns out to be a giant dinosaur's head that opens its eye and lifts her into the sky. With the clip's own sound. Shown: the middle of the wide clip in a vertical frame.

Use this reference
The trend's template clip, 24 s

The same template clip in its own wide 16:9 frame, the frame your video comes in, ending on the dinosaur lifting its head high above the meadow.

Use this reference
Step by step

How to make the Mountain Dinosaur video on MakeViral

Everything runs in the browser. No editing app, no prompt to write, no watermark.

  1. Add your photo

    Press "Create your own" and add you, face clear. Take it with the camera or pick it from your library.

  2. Press Generate

    The button shows the price. Seedance 2.5 puts your photos into the I Thought It Was a Mountain trend clip and copies it shot by shot for about 24 seconds, in two parts joined at a cut of the reel, with the reel's full original song. You write no prompt.

  3. Download or share

    The video is ready in up to several minutes as a 16:9 MP4. Download it, share it from your phone, or find it later in My videos.

Which photo works best?

Both versions take one photo.

  • You: one person, face clear and turned to the camera, in good light. A photo from the knees up or a full-body photo works best: the video shows you running, climbing and standing on the dinosaur's head, and it has two big close-ups of your face.
  • Your clothes come from your photo, so wear what you want to be seen in on top of the dinosaur.
  • Pet: one photo of your dog or cat, whole body, face clear. Your pet runs through the flowers on four legs, climbs the hill and rides the dinosaur's head.
  • Use your own photos, or photos of friends who said yes.

Where did the Mountain Dinosaur trend start?

"I thought it was a mountain" started as a Minecraft video joke. On 17 June 2026 the YouTuber BiggyBurd posted "I Thought It Was A Mountain...", a scripted horror video where the mountain turns out to be a giant monster; it has 2.4 million views. On 10 July 2026 Fearfein posted "I thought it was a mountain in Minecraft Vr..." on TikTok and got 6.7 million views and 465,000 likes. Spin-offs followed in other languages.

In November 2026 the same joke became an AI dinosaur trend. A one-selfie AI template clip shows a woman in a pale pink suit running through a misty field of cosmos flowers to a small mossy hill. She stands on top to catch her breath, the camera pulls back, and the hill is the head of a giant long-necked dinosaur lying in the flowers. Its amber eye opens under her hands, and it lifts her into the sky. The line that goes with it: "I thought it was a hill... it wasn't", and you become the one who tamed a dinosaur. On TikTok, #dinosaurtrend has 7.8 million views and #aidinosaur 582,000 (12 November 2026).

  1. BiggyBurd posts "I Thought It Was A Mountain..." on YouTube: in his Minecraft world, the mountain is a giant monster. It has 2.4 million views by November 2026. YouTube

  2. Fearfein posts "I thought it was a mountain in Minecraft Vr..." on TikTok; it reaches 6.7 million views and 465,000 likes. TikTok

  3. BiggyBurd's full movie version, "I Thought It Was A Mountain... [FULL MOVIE]", goes up and passes 4.0 million views. YouTube

  4. A Spanish take, "Eso... no es una montaña...", gets 2.9 million views on TikTok. TikTok

  5. The joke becomes a one-selfie AI template: a woman climbs a mossy hill in a flower meadow, and the hill is a giant dinosaur's head that lifts her into the sky ("I thought it was a hill... it wasn't").

Copy and paste

The Mountain Dinosaur prompts

You do not need these: the one-tap flow runs them for you, together with the trend clip. [Image 1] and [Image 2] are your two photos, and [Video 1] is the trend clip the video copies.

You

1 photo: you, face clearSeedance 2.524 s · 720p · 16:9374 credits
Video prompt

Recreate the reference video [Video 1] shot for shot: a vast misty meadow of pink and white cosmos flowers under a pale grey sky; in the middle, a low mound covered in moss, grass and wildflowers that is really the top of the head of a giant long-necked dinosaur with grey, wrinkled, scaly skin, lying still in the flowers; the same camera angles, cuts, timing and moves. The ONLY change: the woman who runs through the flowers and climbs the hill is now the person in [Image 1]. The climber = the person in [Image 1], in EVERY shot: copy the exact face from [Image 1] (the face shape, eye color and eye shape, eyebrows, nose, mouth, skin tone, age, hair color, hair length and hairstyle, and any beard, moustache, glasses or freckles) exactly as in the photo, also in the wide shots, from behind and in the close-ups. The same real person from the first frame to the last, so their friends recognize them at once. Never morph, never drift back to the original woman's face. Wears the clothes from [Image 1]: NO pale pink suit and NO long straight black hair unless [Image 1] shows them. No one from [Video 1] stays: the climber from [Image 1] is the only person in the video. Shot 1 [0-1.6s]: a wide tracking shot, low in the flowers: the climber runs, the hair flying, from left to right through the misty meadow, flowers blurred in the front. Shot 2 [1.6-2.5s]: hard cut, a low close shot: the climber's feet running along a narrow grass path between the flowers. Shot 3 [2.5-4s]: hard cut, a medium shot from the front: the climber walks toward the camera, out of breath, looking around. Shot 4 [4-5.4s]: hard cut, from behind: the climber walks up to the low mound covered in grass and wildflowers. Shot 5 [5.4-6.2s]: hard cut, a low close shot: the climber's foot steps up onto the dark, mossy top of the mound. Shot 6 [6.2-14.25s]: hard cut, one continuous shot: the climber stands on top of the mound, bent forward with the hands on the knees, catching breath, then straightens up and looks out over the meadow. From about 9.5s the camera slowly pulls back and down: the mound under the climber is the top of the giant grey head of a long-necked dinosaur lying in the flowers, its huge eye closed, its long neck curving away to the right. On top of it, the climber stands small and does not notice. The dinosaur is one giant long-necked plant eater with one head, one long neck and grey wrinkled scaly skin, moss, grass and flowers growing on the top of its head; it moves slowly and calmly, never roars, never bites. No dialogue throughout the entire video. No background music. Anatomy rules: one head, two arms, two legs, five fingers on each hand. Exactly one person, the one from [Image 1]. No text, no captions, no logos, no watermark.

2753 characters

Pet

1 photo: your pet, whole body, face clearSeedance 2.524 s · 720p · 16:9374 credits
Video prompt

Recreate the reference video [Video 1] shot for shot: a vast misty meadow of pink and white cosmos flowers under a pale grey sky; in the middle, a low mound covered in moss, grass and wildflowers that is really the top of the head of a giant long-necked dinosaur with grey, wrinkled, scaly skin, lying still in the flowers; the same camera angles, cuts, timing and moves. The ONLY change: the woman who runs through the flowers and climbs the hill is now the pet in [Image 1]. The pet = the pet in [Image 1], whole body, in EVERY shot, also in the wide shots and from behind: the same species and breed, head shape, muzzle, eyes, ears, fur colors, fur length, markings and body shape as in [Image 1], with the natural body volume and proportions of that animal: never flattened, squashed, stretched or merged with the flowers or the dinosaur, so its owner instantly recognizes it. A real animal on four legs that runs, climbs and stands like that animal, never upright like a person. No clothes. No woman from the video stays: the pet takes her place in every shot and is the only one on the dinosaur's head. Shot 1 [0-1.6s]: a wide tracking shot, low in the flowers: the pet runs on all four legs from left to right through the misty meadow, flowers blurred in the front. Shot 2 [1.6-2.5s]: hard cut, a low close shot: the pet's paws running along a narrow grass path between the flowers. Shot 3 [2.5-4s]: hard cut, a medium shot from the front: the pet trots toward the camera, out of breath, looking around. Shot 4 [4-5.4s]: hard cut, from behind: the pet trots up to the low mound covered in grass and wildflowers. Shot 5 [5.4-6.2s]: hard cut, a low close shot: the pet's front paw steps up onto the dark, mossy top of the mound. Shot 6 [6.2-14.25s]: hard cut, one continuous shot: the pet stands on top of the mound, panting, then lifts the head and looks out over the meadow. From about 9.5s the camera slowly pulls back and down: the mound under the pet is the top of the giant grey head of a long-necked dinosaur lying in the flowers, its huge eye closed, its long neck curving away to the right. On top of it, the pet stands small and does not notice. The dinosaur is one giant long-necked plant eater with one head, one long neck and grey wrinkled scaly skin, moss, grass and flowers growing on the top of its head; it moves slowly and calmly, never roars, never bites. No dialogue throughout the entire video. No background music. Anatomy rules: one head on the pet, four legs, one tail if the animal has one, no human hands, no human face on the animal. Exactly one pet and one dinosaur, no people. No text, no captions, no logos, no watermark.

2660 characters

How many credits does it cost?

You pay per video in credits, and the create page shows the exact price on the Generate button before you spend anything. The one-tap price covers the video, made in one step from your photos and the trend clip, charged once. One video is 374 credits, so the smallest one-time pack that covers it is $39.99 for 450 credits, with no subscription. The cheaper models are there if you run the prompts by hand in AI Video.

Video modelSettingsCredits
Seedance 2.5 (this template)24 s, 720p, copies the trend clip, one tap374

One-time packs and plans are on the pricing page. A failed video gives its credits back.

What happens in your I thought it was a mountain video?

SecondsWhat happens (Full scene)
0 to 2.5You run through a misty meadow of pink and white flowers, then along a narrow grass path.
2.5 to 6You walk toward the camera, out of breath, then climb onto a small hill covered in moss and wildflowers.
6 to 14On top, you catch your breath and look around. The camera slowly pulls back: the hill is the top of a giant dinosaur's head, lying in the flowers with its eye closed.
14 to 16A close-up of your face as you look down at the ground under your feet.
16 to 24You crouch and touch the grey, scaly skin. A huge amber eye opens right under you, and the dinosaur lifts its long neck high into the sky with you on its head.

This is the I thought it was a mountain dinosaur joke as a character swap, not a new scene: top-quality AI video models, including Seedance 2.5, take the AI template clip and put you in the woman's place, with the same meadow, the same dinosaur and the same camera. The Full scene is made as two AI clips joined at a cut of the scene into one wide 16:9 video of about 24 seconds, at 720p, with the clip's own sound of wind, birds and the dinosaur's rumble put back on after the run. The 15-second option makes only the reveal: from the top of the hill to the lift into the sky.

Press "Create your own", add your photo and press Generate. The exact price shows on the Generate button before you spend anything. A run can take 5 to 15 minutes, and the video waits in My videos when it is ready.

You or Pet, Full scene or 15 s: which one?

VersionPhotoWhat you get
You1 of youYou run, climb the hill and ride the dinosaur's head into the sky. The template clip's woman is gone: you are the only person in it.
Pet1 of your petYour dog or cat runs through the flowers, climbs the hill, and the dinosaur lifts your pet into the sky.

Both versions come in two lengths: Full scene (about 24 seconds, the whole run, climb and reveal) and 15 s (only the reveal on top of the hill). The Full scene runs two AI clips, so it costs more. The price of each one shows on its Generate button.

What do people call the dinosaur hill trend?

Most people search for the meme line itself: I thought it was a mountain, or I thought it was a hill. The I thought it was a mountain meme comes from Minecraft, where the mountain is a giant monster, so searches for I thought it was a mountain Minecraft find the game videos, and the dinosaur AI video is the new real-life version. The AI version also goes by the I thought it was a hill dinosaur, the hill dinosaur AI or the dinosaur head hill. People who saw the template's own line search for tamed a dinosaur AI, and others look for any AI dinosaur video, a realistic dinosaur AI video or simply a dino AI video. Fans of riding a dinosaur AI clips end up here too, because the dinosaur carries you away on its head.

On TikTok and Instagram it sits inside the wider dinosaur trend: the dinosaur trend TikTok tag #dinosaurtrend has 7.8 million views, and the dinosaur trend Instagram reels use the same clip. Here it is a ready dinosaur trend template, so you do not need a dinosaur AI prompt or an AI dinosaur generator: one photo is enough.

What goes wrong, and how do you fix it?

ProblemFix
Your face looks like the woman from the template clipUse a closer, sharper photo with your face big and in good light, then run it again.
Your face is small in the first secondsThat is the scene: the run and the pull-back are wide shots. Your face shows big in the close-ups at about 3 and 15 seconds.
The dinosaur looks odd (a second head, a floating head)Run it again: no two runs are the same.
A small jump at about 14 secondsThe Full scene joins two AI clips at a cut of the scene there. Pick the 15 s option for one clip with no join.
Your pet stands up like a personUse a whole-body photo of your pet on four legs.
The run failsSome photos get refused. MakeViral then tries a backup model, and if the video still fails, the credits come back.
FAQ

Mountain Dinosaur trend questions

What is the I thought it was a mountain AI trend?
It is an AI video where you climb a small mossy hill in a flower meadow, and the hill turns out to be the head of a giant dinosaur that opens its eye and lifts you into the sky. It takes the Minecraft "I thought it was a mountain" joke into a realistic AI dinosaur trend: "I thought it was a hill... it wasn't."
Where does "I thought it was a mountain" come from?
From Minecraft videos. BiggyBurd's "I Thought It Was A Mountain..." (YouTube, 17 June 2026) and Fearfein's "I thought it was a mountain in Minecraft Vr..." (TikTok, 10 July 2026, 6.7 million views) show a player on a mountain that turns out to be a giant monster. The AI version swaps the monster for a dinosaur and the player for you.
How do I make the AI dinosaur video?
Press "Create your own", pick You or Pet, add one photo and press Generate. The button shows the price first. You write no prompt. A run takes 5 to 15 minutes and comes with the clip's own sound.
Can I put my dog or cat on the dinosaur?
Yes: that is the Pet version. Your pet runs through the flowers on four legs, climbs the hill and rides the dinosaur's head into the sky. Use one whole-body photo with the face clear.
How long is the video?
The Full scene is about 24 seconds, the 15 s option is 15 seconds. Both are wide 16:9 at 720p, like the template clip, with its own sound of wind, birds and the dinosaur's rumble.
Is there a song?
No. The trend clip has no music and no speech, only the sound of the meadow and the dinosaur, and your video gets that same sound, uncut. You can turn it off on the result screen.
Is the dinosaur real?
No. It is an AI video made from your photo; the meadow, the dinosaur and the camera all come from the AI template clip. Say it is an AI video when you post it.
Do I need a dinosaur AI prompt?
No. The prompt is built in: it tells the AI to keep the meadow, the hill, the dinosaur and every cut of the clip, and to put you or your pet in the woman's place. You only add a photo.
Does it cost credits?
Yes. The Generate button shows the exact price before you spend anything, the 15 s option costs less than the Full scene, and if a video fails, the credits come back.
More trends

Other AI video templates

Make your own Mountain Dinosaur video

Add one photo and tap once. No prompt to write. 374 credits.

No watermark. A failed video gives its credits back. Secure checkout by Stripe.