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I saw this article today about a recent breakthrough in Jewel Cave.

Can anyone share the details?

The breakthrough was in the western branch of the cave, about 5 hours (roughly) from the entrance, one-way. An area near the Fitting Room was being pushed by Dan Austin, Rene Ohms, and Chris Pelczarski. They discovered a tight fissure heading off the map to the southwest of anything known previously, with significant airflow. The fissure almost ended, but Chris managed to do a tight squeeze up and over a breakdown block and into a parallel fissure that continued in two directions. A return trip on June 1st with Dan, Chris, Larry Shaffer and Ian Chechet surveyed South in one of these leads for 1,300 feet in mostly large, walking, multi-level fissures, some of which were 60 feet tall and up to 20 feet wide. They left multiple leads heading in every direction. And finally, the last trip on June 28th returned with Larry, Rene, and Chris and surveyed in two of these leads, accumulating another 1,080 feet of survey and left even more walking sized leads heading multiple directions. A return trip is planned for this Saturday, so more updates after then....

Congratulations and thanks for the update. Good luck on Saturday!