I recently found a PDF file of the original map of Carroll Cave. This was done by James Helwig in the early 1960s. It shows about 10 miles of cave.
Zoom in on this map. There is quite a bit of details for a map this old.
Category Archives: Survey
Survey stats, maps and trip reports.
Survey trip report 2018-07-14 Carroll Passage
Permit number: 1807-2
Trip date: 2018-07-14
Trip participants: Bob Lerch, Dan Lamping, Josh Hafner, Derik Holtmann, Joe Sikorski
Entry Time: Noon
Exit Time: Midnight
Our survey objective was the CR5 side passage in the Carroll River arm. We also wanted to get some photos in the vicinity of the CR5 side lead. It’s not the most beautiful part of the cave, but it is impressive river trunk passage that goes and goes with deep, soupy, and sticky mud in the stream channel. CR5 is downstream (towards the entrance) of Paradise Passage (CR3) and Trunk-in-the-Junk (CR4), but a good ways upstream of The Turnpike. Our plan was to have Josh and Derik do the photo work, and Dan, Joe, and I would survey.
13 February 2016 – far down Thunder river Lake Room snorkeling
It was several lengths of iron pipe strapped together. Three green 6 gallon water jugs were attached, obviously to act as floats.
3/23/2014 – 20 mile survey milestone reached!
The milestone was reached in DL7-L2, which is the lengthy south fork of DL7. The cave was nice walking passage with a large room near the 20-mile mark.
1/7-9/2011 – Survey in upper Thunder
While not a steller day, we managed 148 feet of small passage.