This is a screen capture of Professor Rupert Till's Soundgate App, that allows you to see and hear what it was like to be in ancient archaeological sites. This one features the La Pasiega Cave in Northern Spain, which is part of a world heritage site. You can see red paintings, these are probably 20,000 or more years old, the black horse is a little more recent, perhaps 15,000 years old. You can hear an animal horn, bone pipe, and frame drum being played so that you can appreciate the acoustics in this long passage like cave.