ATD cave in Mexico

[Joseph Tracy]

In ATD there is a scene in Mexico where Frank is with some Tarahumare Indians and takes some San Pedro cactus( mescaline rich). He flies with Estrella to an underground cave where the waters that once made the desert flourish but were banished through greed are raining inside a hidden underground cave. 

An extension of a water filled underground cave was found in the Yucatan recently, making it the largest underwater cave known. So.. kinda strange and cool.

https://www.theguardian.com/world/2018/jan/17/worlds-longest-underwater-cave-system-discovered-mexico-divers-gran-acuifero-maya-
Pynchon-l / http://www.waste.org/mail/?list=pynchon-l