With a help of dark vision and several light sources you see it is about 50 feet long tunnel with closed doors at the end, before that door a floor of the shrine rises 7 feet, forming a ledge.
OOC:
no checks required to climb up the ledge, but you don't see what is behind and only taller of you see the upper part of the door on the other side of ledge
Jim slowly steps forward. Ha'aroo asks Nebula and Shara to keep distance and follows jim when he is 10 feet away
Travers stay on the stairs, Undril downstairs with Mules.
When Ha'aroo start mowing forward the stone-tiled floor covered with a thick layer of mud, creepers, and blown-in leaves suddenly fall and Ha'aroo fall prone in the 20 feet deep pit
Luckily for Jim he has just passed the edge of the pit, however almost at the same moment scything blades sweep out from concealed wall niches
OOC:
Jim - make a DC 13 Dexterity throw to only take half of the damage I rolled
Jim, seeing pit behind dashes forward and gets up the ledge, getting some slashes from 4 blades.
Nebula and Shara who listened Ha'aroo's suggestion and stay at entrance did not fall into pit and see a narrow ledge remains around the outside edge.
OOC:
The ledge can be traversed safely with a successful DC 10 Dexterity (Acrobatics) check