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contingency anchor - munter & two half-hitches

Additonal Resources:
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Purpose:
For rigging releaseable single strand rappel anchors.

Application:
Useful when descending in waterfalls or for beginners who may require lowering should a mishap occur, or for setting rope length when descending into water hazards.

Fig. 1 - Set-up:
Thread the rappell strand through the rapide as shown. Clip an HMS carabiner to the rapide and rig the munter hitch.


Fig. 2 - Locking off the Munter: The half-hitches lock off the munter hitch so that the line is fixed for single strand rappels.

Gather slack from the rope bag between the rapide and the munter hitch. Grasp a bight of rope from this slack and tie the first half hitch as shown.



Fig. 3 - Secure the knot: Tie and dress the second half-hitch by cinching it snugly against the munter hitch (knot shown loose & undressed at right for clarity). Clip the safety bight (shown red) to the anchor with a locking carabiner or canyon quickdraw.

The descent strand is now ready for rappel.

IMPORTANT: Always tie two half-hitches. A single half-hitch is not considered secure.



Fig. 4- Releasing the fixed line: In the event of an emergency or at the request of the descender, the munter can be easily engaged by unclipping the safety and untying the half-hitches while maintaining a firm grip on the belay strand (i.e. from where the rope leaves the munter to where it passes through the rapide).

DO NOT UNTIE THE HALF-HITCHES WITHOUT HAVING A FIRM GRASP ON THE BELAY STRAND. The weight of the descender will load this strand quickly and you'll need to be prepared for it.

Use the munter to lower the descender to safety.


 
 
 
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