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A footprint.
How do we know dinosaurs walked here?
A footprint is not the animal. It is a moment of weight, kept by mud that later turned to stone.
Tap the picture. Cause the clue.Diagram · You can try thisWhat could make a footprint like that in stone?
The past can leave traces.
Keep looking
There is more in this room, if you want it.
It left a trace · We know a lot
What else would you want to check?
The Still Floor