Inside the prang there is a two level crypt and you can enter inside by climbing the steep steps on the sides of the tower. The crypt was undiscovered until 1957 when looters dug into it and stole some of the artefacts inside. Much of these were recovered and it was found that there were many valuable Buddha images and tablets made out of solid gold, along with incredible murals that cover the walls. There are now steps leading into the two levels of the crypt and although it is very hot and humid in there, the ancient artwork is beautiful and worth the effort.