According to the legend there was an underpass under one of the temples which led to the treasures. But once, during the earth-moving work the walls of the monastery were broken and it was decided to block the pass with rocks and fill it with concrete. Caves passes were left unexplored.
As the legend says there was one more entrance to the caves from the underground almshouse housing. Even nowadays this place isn't calm and it does not dispose to walking. But I'm planning to satisfy my interest and check out the legend of treasures...