A Complete San Marcos Bucket List: Can't-Skip Places to See|
https://irvingtxscenic-spots.zenbloomer.com/posts/old-hangars-mermaid-monuments-and-spring-lakes-san-marcos-s-best-kept-secrets
From drifting down the clear, spring-fed headwaters all the way to descending into the nation's only earthquake-formed cave visitors can enter