Is climbing like that possible solo? Did you ever do that? I guess my biggest hurdle to doing it is whether or not it can be done without leaving thousands of $$$ in climbing stuff screwed to the walls behind me. Could become a costly hobby (and a hidden bonanza for anyone climbing behind me
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Perhaps you are thinking of free soloing? Most climbers these days leave little gear behind.
climbers definitions:
* solo = climbing alone
* free solo = climbing alone without protection (ie no ropes, carabiners, nuts, pitons, etc)
* anchors (protection) = attachments to the rock (eg nuts and pitons) which anchor the rope going to the climbers
* fixed anchors/protection = protection left in place for other climbers
* leader = the one who goes first, placing protection as needed
* second = the one who goes second, generally cleaning (removing) the protection as he goes
* clean climbing = climbing leaving no (minimal) gear or trace behind
The main ethic these days is clean climbing: A leader places protection and his second removes (cleans) it, thus leaving nothing (or as little as possible) behind. A roped soloist can also do the same, but must climb each pitch 3 times: up placing protection, down and back up cleaning the protection. A free soloist, of course, doesn't place any protection.
Fixed protection is typically used on popular climbs where constant placement and removal of anchors would wear the rock and alter the climb.
I think most climbers start with partnered climbing and some choose to move on to soloing (roped or free). Difficulty of the climb is important here--someone who uses protection on difficult climbs may be willing to free solo easier terrain.
In general, one avoids leaving any gear behind so the gear costs are mostly initial cost plus replacement of worn out gear.
It should be obvious without saying, but a slip or broken hold when climbing without protection can easily result in serious injury or death. Protection greatly reduces (but does not totally eliminate) the risk. And some routes are more dangerous than others depending on difficulty, ease of protection, how secure the anchors are, loose holds, the amount of falling rock, etc.
“There are only three sports: bullfighting, motor racing, and mountaineering; all the rest are merely games.”
― Ernest Hemingway
Doug