Underground Marvels - Season 2 - Eps 8: Grand Canyon's Lost Treasure
Descending more than 200 feet beneath the Arizona bedrock lies the largest dry cave system in North America; experts explore this vast subterranean network to reveal the mysteries and undiscovered treasure that remain hidden within its walls.
About Underground Marvels
Title: Underground Marvels
First Air Date: 2019-10-17
Last Air Date: 2021-10-07
Status: Returning Series
Rating: 6/10 (from 1 votes)
Language: EN
Seasons: 2
Total Episodes: 20
Network: Science U&Yesterday
Genres: Documentary
Production Companies: Phoenix Television, TCB Media Rights
Synopsis
Historians, engineers, and experts take a look at the underground structures, systems, and phenomena that exist beneath our feet.
