Extended Data Fig. 1: Profile map of Devils Canopy Cave.
From: Semi-continuous release of Cordilleran Ice Sheet meltwater between 20,000 and 17,000 years ago
Blue arrows denote modern-day streamflow. Water from modern-day stream exits Devils Canopy into a large network of other caves, some being unexplored. Red star denotes location of Devils sequence in Devils Canopy Room. Also shown is the boulder-sealed passage where sediments from Devils Sequence are hypothesized to have originated before being blocked. Green dashed arrow shows possible pathway of former sediment-laden ice-sheet meltwater in DC Room. Map modified from original map by Kevin and Carlene Allred.
