I watch some guy on youtube that finds stuff on Google Earth and then hikes out to the old ruins in the U.S. Southwest. He is always very respectful.
He has software filters that he’ll use to enhance the photos of cave art to be able to see them better. Beats dumping water on them. Also uses a drone when he can (some places don’t allow drones) and he has software that will create a 3-D image of the ruins.