1st Trip: On 9/21/1999, Rod Horrocks led Larry Spangler to the Omnibus Hall area in the Historic Section.
Trip Report: We took line plots and survey data to Omnibus Hall to find the JK survey. However, we were unable to find it. After extensive searching, we did find the SPH survey in Upper Level cave off the north side of Omnibus Hall. We quickly found an unsurveyed passage off of SPH14 and started a survey, beginning at SPH20. We surveyed 236 feet and left four low-ceilinged leads and the main passage still continuing. I'll return in the near future.
Trip Report: I returned to a lead in Omnibus Hall I had found on my last trip on 9/21/99 with Utah caver, Larry Spangler. The right fork connected with Jim Nepstad's WX survey within 40 feet. Surveying into the virgin left-hand crawl, we surveyed along a sixty-foot long bellycrawl that broke out into upper-level cave that had been partially explored (from another route) by either Herb or Jan Conn or John Scheltens on a single trip. I hypothesized that they had probably come from the AA survey in the Club Room Section. However, that person had only checked the initial 220 feet of passage, leaving the rest unscooped and virgin.
While surveying up a debris slope, we found an interesting boxwork type of feature that appears to be composed of some red, fibrous, spiky material. In hindsight, I suspect that they are stylolites, a bedrock pressure feature that dates back before the limestone was lithified. We mapped a total of 900 feet in the area, most of it (530 feet) in virgin cave. This included the 200-foot long, mostly walking passage, we named the Mind Boggler. This passage was partially floored with mud cracks and calcified mud cracks. Since the Wind Cave survey arrived at the 86-mile mark as we surveyed up into a 22-foot high dome, we named that dome, 86 Mile Dome. We then surveyed into a beautiful gypsum passage above the Flower Shop that we named the Triple Crisp Passage, after three silver-dollar sized loose gypsum snowflakes on the floor in the middle of that passage. We left two tight leads off that passage. We then returned to the end of the Mind Boggler passage and continued our survey in walking passage that ended after 125 feet above Upper Rome. We found a total of three rooms and left numerous good leads for a return trip. Our average shot for the day was 15.1 feet in length.