Tool tethers prevent the gigantic problem of dropping an ice tool on a long alpine route. The commercial ones work fine; however they can be a bit expensive. Here's a way to make your own.
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https://www.alpinesavvy.com/blog/diy-ice-tool-tethers
After getting dropped off by plane in a narrow, threatened valley, the “easiest” way back to civilization was up the giant East Face of Mount Hunter.
https://www.climbing.com/news/new-climbing-route-mount-hunter-alaska-one-way-out/
