SIMA 55

Alternate Names: T55

LOCATION, ENTRANCE, DESCRIPTION, SURVEYS, REFERENCES


CO-ORDINATES: x: 0359471 y: 4785483
ALTITUDE: 2010m
LENGTH:
DEPTH: -250m


LOCATION:

Sima 55 is located approx. 300m south west of the entrance to Sima 56 at an altitude of 2010m, some 50m higher than Sima 56


ENTRANCE:

Massive open shaft at the bottom of a huge snowfield

[Photo]


DESCRIPTION: 

A huge open shaft. >200m deep.
 
At -200m the shaft reachs a snow plug.  The snow plug rests on the rock floor of a chamber with no apparent way on down.  However, the chamber narrows at one end leading to a 4m climb up to a strongly draughting hole to the head of a 10m pitch, landing on a boulder slope.
 
Descending the slope leads to a tight rift over which it was possible to climb to give a 20m pitch beyond the restriction.
The bottom of the 20m pitch landson a boulder slope which continues down the rift but closes down to a blockage of easily diggable head sized boulders covered in wet mud.
 

 


SURVEYS:


REFERENCES: