1:. Eddie Mason and Dan Hibberts (in the hole) inspecting site 4401.
2:. Dan Hibberts inspecting the small sump pool in site 4401. (photos: Juan Corrin, March 2016)
3, 4:. The sump pool in site 4401.
5:. Peter Eagan at site 4401. (photos: Phil Papard, April 2016)