Spring Lake Natural Area: A Best-Kept Secret for Trekkers and Birdwatchers|

https://irvingtourist-guide.rivertonbrief.com/posts/the-wonder-cave-the-most-unusual-spot-in-the-texas-hill-country

Venture Into The Spring Lake Preserve in The Mermaid City—252-acre spread of pathways, wildflower flats, and tree-covered hills above the San Marcos River headwaters