Perhaps this might be possible. But I don't think they would creat a garden or a statue themselves by planting flowers or chiseling rocks. However, if there is a place extraordinarily peaceful and beautiful it might have some kind of spiritual importance for many dinosaurs. I could also imagine dinosaurs to have different places that for some reason or the other have a meaning to them.
Littlefoot for example, I could very well imagine that some high place from where he could watch the clouds would have a special importance which others might not even notice or understand.
One thing I could imagine for the old dinosaurs of the Great Valley is, that if they feel they are going to die very soon, that they may go to a special place (same as elephants do sometimes) to die there, perhaps even into the Mysterious Beyond.
