The students are part of the first scientific scuba diving course offered at ... the course includes field trips to dive at Canyon Lake and Spring Lake, which is the headwaters of the San Marcos ...

“Canyon Lake originally was a city, and it being a limestone bottom, on a very sunny day, you can see 15, 16 feet down. It’s one of the few scuba-diving certified lakes, so you can actually ...

“Canyon Lake has lots of secrets.” The cave is just one of many secrets that lay beneath the water. Previous diving expeditions have led to the discovery that a few towns once existed where ...