Impressive Ajanta

500 kms north of Hyderabar, hanging over a river's horseshoe cliffs for more than a millenium, is Ajanta, a hidden place were boudisth monks and shadus came for praying, painting, scuplting and carving. Something courious: If inside the caves (monasteries in fact) yo say Ommm o Ummm, there is echo, a tin echo, for the rest, no echo at all.