Tomb of the Seekers

Publisher's blurb:

Running through the centre of this crumbling tomb is a steep stone ravine, filled with mist that disguise the steep descent down into darkness.
Some rooms are filled with pools of water, whilst others only contain cracked tombs and intricate tiles, long since covered with rubble. A central chamber contains a sarcophagus with the carving of a sleeping king on top. Behind him waits a large chest on a raised platform, surrounded by more rubble.
Rickety wooden bridges connect the walkways in places where the original stone has fallen away. Some lead to large rooms, while others are only small and filled with stone benches of urns.