[trip] Hellhole Window Dome Death Climb

There were only 7 people in Hellhole this week, broken up into two teams - one team re-surveying the Shipp Room, and the second - myself (Dave Riggs), Miles Drake, and Kurt Waldron - heading to the North section of the cave to finish off the remaining lead, a sketchy climb at the Window Dome. Our crew rigged and dropped the Hellhole entrance pit and were on our way to the Flood Section of the cave by 12:00 noon.

We payed particular attention to the paleo-hydrology of the cave on the way in, noting flow from the entrance area towards Little Hellhole, as expected. Underneath Little Hellhole, but before the Drano Passage, we noted conflicting sets of scallops, likely from floodwater reversal (in my opinion) - several textbook ceiling pockets lend evidence to pressurized floodwater infiltration.

We made it to Window Dome and checked out the "Death Climb". My first response was "that doesn't look too difficult!". On closer inspection, this was a traverse of about 10 - 15 feet from the front "window" to the back of the dome, where there was no actual ledge to traverse, only a tiny slope of friable rock and mud. The pit is about 35 feet deep at this point, and lined with towering pinnacles of sharp limestone - Yikes!

Miles tied a rope around his waist, Kurt Waldron - Chairman of the NSS Safety & Techniques Committee - set up a belay with a munter hitch on the edge of the window, while I wedged myself in on the opposite side and set up a belay for Kurt. Like a cat, Miles skirted around the edge, the deafening sound of rocks and debris showering down into the bottom of the pit as each "foothold" crumbled beneath his weight. Moments later, he stood on the opposite side of the pit, and had tied the rope in for us to use as a handline. He checked out the passage, and called for us to cross so we could survey it.

Kurt, carrying both his own pack and Miles' pack, attached a few prusik knots to the rope and slowly crept across the traverse. Once he was safely across, I headed out, also attaching a prusik knot at Kurt's suggestion - I had started across with a munter hitch on, to arrest my inevitable fall into certain doom. I made it halfway across and decided that the traverse was too risky (especially considering that Miles had now shouted that the passage quickly ended up ahead), and decided to turn back, letting them do a two-man survey. Unfortunately, trying to turn around and head back looked even sketchier than the other option, so with some (gratefully appreciated) help from Kurt, I continued across the remainder of the traverse to the opposite side. Whew!

The opposite side of Window Dome is floored with massive amounts of flowstone, and a 2 - 3 foot deep rimstone dam sits at the top of the slope. A steeply-sloping passage, floored in breakdown and absolutely covered in mud, heads up to where it pinches out in 50 feet. A lower, meandering canyon passage tunnels beneath the upper passage, but splits in half and becomes too tight to follow without passage enlargement. This lower passage appears to flow away from Window Dome, not into it. Water comes in from the ceiling of the dome, but there was no apparent way to reach it from our vantage point. We surveyed the colder-than-usual passage - about 100 feet - and realized that we now had to traverse back across the pit.

While the "footholds" shrank with each step, we still managed to all make it back across without major incident. We tied our survey in to a known station in the big room and ate lunch. Our task completed without loss of life, Miles then gave us a brief tour of the North Fork Passage.

We climbed up the slope from the big room, being careful not to touch the rope which showers rock and dirt down from above. We headed through the Horseshoe Passage, checked out some locally-folded strata in the Raccoon Passage (along with some moldy old Raccoon scat), then headed back and dropped down a hole in the floor which led to an impressively-tall canyon - the North Fork Passage (which oddly trends South, not North). Miles sent Kurt and I up a small high lead to see "the thing"... there, in the middle of a nondescript, barren side passage, was an absolutely stunning helectite cluster - The Medusa. We continued on through a maze of breakdown and smaller canyon passages until we popped out at the bottom of what looked like a giant tectonic chamber, the Fault Room. We couldn't find any actual fault, but the far, high side has terrifying breakdown stacked 40 feet high to the ceiling.

Our trek out was without incident. Miles suggested that we check out the Delightful Dig/Crawl; much crawling ensued, with little delight. There was a great deal of bat activity through the Drano Passage and beneath Little Hellhole, making the crawl out quite exciting. The bats were especially active in and around the ceiling pockets. The other team had already exited by the time we reached the entrance room. Everyone climbed out by 01:30, we were derigged and on our way by 02:00.

13.5 hours underground, around 150 feet surveyed.