750g (1.65 lb)
dims: 8.20"OD x 10.75" tall
top opening: 153mm (6.0")
avg. wall thickness: .125"
capacity: 431 cu in (1.86 gal)
user days: 18-20
vent: pressure relief type - 1.5 psi
haul cradle: 1" flat web
cap: screw on, w/seal (Polypropylene)
tank: rotational molded Polyethylene
Mountain Tools BIG WALL
Our Leave No Trace® wilderness
ethic suggests we take every action possible
to reduce our impacts on the environment over
which we travel. What to do with human waste is
always a concern. Rock climbers and big wall climbers
have practiced pack it in, pack it up & pack it
out for years. All the versions of hasty home
built hardware store solutions end up being a
nightmare and fall short in several areas. They
truly are heavy "pipe bombs" ready to go off (leak),
get stuck in a wide crack and (God forbid) torpedo
back to mother earth. Their long skinny dimension
make hauling, packing back down and dumping &
cleaning a hassle too!
Finally a professional solution
is available that addresses all climbers concerns
and needs - THE BIG WALL CAN. The BWC is an adaptation
of the Mountain Can invented by Paul Becker for
use on the upper reaches of Denali. It is endorsed
by Denali Climbing Rangers and (where used?) It
is washable and reusable as defined by the Bureau
of Land Management, National Park Service and
National Forest Service. Most importantly, it
is light weight (just over 1 1/2 lbs!), easy to
haul (its squat proportion stacks under the haul
bag) and easy to use. You'll appreciate the Big
Wall Can when Nature does call - and she's got
your number! There are two options for use:
Suggested Use - Unscrew the Lid, add
the Foam Ring, take a seat and do your business.
This requires a rock ledge (recommended), portaledge
(do-able) or the BWC to be hung from anchors (awkward).
In all cases be sure to keep yourself and the
BWC on belay! The result of several days "deposits"
is a slurry of waste that can be emptied directly
into flush toilets, pit toilets or RV Sanitary
Stations (located near Upper Pines C.G. in Yosemite).
Various organic and chemical additives are commercially
available to accelerate biodegradation and reduce
odor. Add a small amount if you wish before the
start of your climb.
Big Wall Use - Because Nature doesn't
always schedule her calls... and you might not
be hangin' out at the bivy or near a ledge - most
climbers will want to do "number two" in a small
brown paper bag (degradeable) then roll it up
and place in the Big Wall Can for transport. Various
acrobatic postures have evolved over the years
(and everyone has their own "style"). Bags can
be pre-rigged and stashed with a small handful
of kitty litter to cut the smell and absorb liquids.
Empty this in to a pit toilet (not a flush toilet)
or RV Dump Station. Make every effort to pee "off
route" or into a bottle carried for this purpose.
It can be emptied later into the BWC or dispersed
onto the rock away from the climbing line - where
sunshine and showers will quickly wash it away.
Crag & Back
Country Use - If you travel with a
group and congregate in one area or site (guided
climbers, trail crews, fire fighters, construction
& utility workers) consider using a BWC for communal
use. This should be one of the responsibilities
of the guide, crew chief or supervisor. The BWC
can be carried in hand, strapped to a pack or
carried inside one.
- After use, the Big Wall Can can be cleaned with
a mild soap and water solution with a little bleach
added as a disinfectant.