What to do ? Hum ?
Go swimming in near by Balmorhea State Park. 2 miles south of I-10 on Highway 18.
This little oasis in the middle of nowhere USA is the largest natural bottom spring fed pool in the US. The water originates from a fault in the Guadalupe Mountains about 80 miles NW of the park, Also waters from The Davis Mountains finds it way to the San Solomon Spring that feeds 1.2 million gallons per hour into the 3.5 million gallon pool.The math = refills itself every four hours.It also supports small fish , bullhead catfish , soft shell turtles .
With depths of 32 feet at the spring inlet and average 20 -25 foot depths and an average temp of 72 - 76 degrees year round make it great for scuba divers. The 3 acre pool diverts water from the pool to irrigation canals that extend through town and 40 acre Lake Balmorhea.
Last trip to Ft Davis I did exactly that, went swimming. Outside temp 96 degrees water temp was 74. The cost is reasonable at $ 7.00 for adults and children under 12 are admitted for free. The State of Texas annual pass for all state parks is only 60.00 per year.