>little kid, maybe 11
>Yucatan road trip with the family in a rented old beat to hell Jeep
>Chitzen Itza
>Wandering around, looking at stuff
>Go inside one of the buildings
>just a couple of empty rooms separated by a short hallway, each with an exterior door
>one of the rooms has a spot along the bottom of one wall that appears to be crumbling
>looks like a hole, but it doesn't seem like there should be anything on the other side of that wall
>a piece of wood has fallen over that used to lean against the wall and cover the hole, which is a couple of feet in diameter, to small to be an entrance to anywhere
>can't see anything in there
>stick head in, still can't see
>feel around, no floor
>wtf
>wait, no - stairs
>crawl through
>scoot down a staircase about as tall as I am
>pitch black, the entrance is all that's visible
>walls on either side
>walk down a hallway with one hand on each wall, can't see anything
>right wall goes away
>dunno if I'm in a room or at an intersection with another hallway
>look back at the light from the entrance
>decide only to go in a straight line, never letting that light out of view
>Keep going with left hand on the wall
>right wall comes back, must have been a hallway
>eventually come to the end, right wall is gone again, hallway must turn right
>entrance light is a barely visible spec
>run hands along the wall
>small, rectangular hole, less than a foot accros
>for some reason, this is where I draw the line - I'm not sticking my hand in there
>the choice is to go back or lose view of the entrance
>go back
>crawl out
>find family
>tell them
>they go look
>mom and sister decide to go in
>mom barely fits
>they come back after a minute, say they took the first right, but that the floor ended after a short distance in some kind of pit