Some have referred to the Waterholes Rope Exchange Program. I had planned on doing Waterholes a couple of years earlier after a Glen Canyon trip, with Todd Martin and Aaron Locander, but bad weather and an attempted suicide the night before had pre-empted an actual attempt. Waterholes Canyon, down on the Arizona Strip.
The term also serves as a pun as it has been theorised that extraterrestrial species would use this band as a commonly recognised communication channel (in English a watering hole is a vernacular reference to a common place to meet and talk). The combination of hydrogen and hydroxyl yields water (the 'water' part of the name) the 'hole' part refers to the sudden drop in radio noise within this band. This is the band between the hydrogen line and the strongest hydroxyl spectral line, and is notable because it is a quiet region between two notable frequencies it is theorized that this would be a good band for communications to or from extraterrestrial intelligences.The term was coined by Bernard Oliver.
water, with these handy checklists for different hike durations and weather. 'In SETI, the Water Hole is the band of radio frequencies between 1420 MHz and 1640 MHz. slot, seating the straps size hole onto the center post.