top: Lank Mills at the usual, slot entrance to Cueva Hoyuca. (photo: Juan Corrin)
middle: Darren Jarvis about to enter Cueva Hoyuca. (photo: Paul Clement-Walker)
bottom: Patrick Warren outside the field entrance to Cueva Hoyuca.
The fence is at one side of the new Dairy Museum (photo: Christine Ziebold, August 2019)