| | |
| NOV-1964 | exploration of the first 100m by Joaquín Plana from G.E.Edelweiss. |
| 1979 | first sump crossed the first time by two divers from the G.E. Standard (STD) from Madrid. |
| 1981 | second sump reached after the exploration of the subaerial section. |
| 1983 | 383m of sump 2 reached by G.E. Standard. |
| 1989 | G.E.Gaia advances to 650m. |
| SEP-2002 | sump 2 extended to 1,950m and a depth of -60m by Jason Mallinson. |
| MAY-2004 | sump 2 extended to 2,220m and a depth of -70m by Jason Mallinson. |
The water of the spring emerges from a huge cave, starting with a 700m sump.
After a 300m swim, a cascade, and a short stream passage a second sump is
reached.
This second sump is known for 2,220m and a depth of -70m and is the longest sump
in Spain.
Karst cave.
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