A sink that seems to emerge at #5456, and sink again at #5457. Those observations were made in wet weather. The water may be that seen in Shrimp Bone Inlet, Cueva Hoyuca (#0107)

Reference: anon., 2024f (Christmas logbook)
Entrance picture : 2024
Underground pictures :
Video :
Detailed survey :
Line Survey :
On area survey :
Survex file :