Stan Roth gets a closer look at a small group of big-eared bats in a cave in the Gyp Hills. Roth, a retired Lawrence high school biology teacher, makes regular trips to the hills to study bats since the 1960s.
A biology student from Fort Hays State University handles a brown bat to collect a mite off the animal's ear during a previous trip with biologist Stan Roth.
Biologist Stan Roth thumbs through a log book signed by spelunkers who have explored Big Gyp cave through the years, leaving his name behind as well.
A small group of big-eared bats hangs from a cave in the Gyp Hills. Lawrence biologist Stan Roth started a regular census count of Kansas bat species, monitoring increases and decreases in their populations.
Members of a class from West Texas A&M University exit Big Gyp Cave in Comanche County. The students were touring the cave with Stan Roth, a Lawrence naturalist, on Dec. 3.
Stan Roth, second from right, explains plans for visiting caves as students warm their hands and feet around a campfire at a farm near Sun City.
Students from West Texas A&M University wash dishes, preparing to camp out before a day of exploring caves in the Gyp Hills in southwest Kansas.
Stan Roth, a retired Lawrence High School biology teacher, leads students from West Texas A&M University along a branch of Cave Creek in the Gyp Hills.
Stan Roth stops to check for a bird nest before entering a cave.
Ray Matlack, associate professor at West Texas A&M University, left, and Stan Roth, Lawrence naturalist, second from left, show students their first glimpse of a bat at Big Gyp Cave.
A lone cave myotis bat clings to the ceiling of Double Entrance S cave.
Stan Roth points out the vent in the DES cave, which is a perfect place to build campfires.
Stan Roth and students from West Texas A&M University stop to investigate.
Students from West Texas A&M University prepare to enter a crawling portion of Double Entrance S Cave.
Stan Roth gets a closer look at a cave myotis bat.
Stan Roth gets a closer look at a small group of big-eared bats.
A large cluster of cave myotis bats cling to the ceiling in the DES cave.
A big-eared bat hangs in the Lost Colony Cave.
A biology student at Fort Hays State University handles a brown bat to collect a mite off its ear. The student handled the bat during a previous trip with Roth to the Gyp Hills.
Overlooking the descend to Lost Colony Cave, the remains of red cedars still scar the landscape from a wild fire in the early 1990s.
Stan Roth, in green, points out geological characteristics at the entrance of Big Gyp Cave to a group of students from West Texas A&M University. The students toured caves in Barber and Comanche counties with Roth earlier this month.
Stan Roth of Lawrence leads a group of students from West Texas A&M University through Big Gyp Cave.
The Red Cliff along the Salt Fork of the Arkansas River is in the heart cave country.
Stan Roth, a Lawrence biologist, explains the placement of bats in a cave while taking notes during a recent trip to Barber and Comanche counties. Roth was talking with Ray Matlack, a faculty member at West Texas A&M University, who took a group of students on a field trip to the caves.
Stan Roth, Lawrence naturalist, prepares to enter Big Gyp Cave. Roth visits the southwestern Kansas caves on a regular basis to count bats.