https://www.youtube.com/watch?v=tNgbpsZYHTg
Of course there are all sorts of hidden and secret places around the world.
Secret Bases and other places https://www.youtube.com/watch?v=toZFyrSJTh4
Mysteries in the Wilderness https://www.youtube.com/watch?v=1-PyvszWEtw
Secrets Hidden Inside Mountains https://www.youtube.com/watch?v=sAyUy0UgVLU , https://www.youtube.com/c/BeAmazed/videos
