Let's see... deep... unstable... multiple long restrictions... silty (clay!)... and, to quote the fellow who laid the last few feet of line there, "impassible, impossible." I reckon a map of the system looks "relatively simple" in the comfort of my living room, but when in there it's another matter entirely.
Rick
I knew I was in trouble when I wrote that one.
Simple versus intricate. Not simple to dive.
As a spelunker, I've explored many caves. Some required squeezing thru 45 degree angle cracks for 40 feet before opening into a big room. Others required sliding through mud on my belly. Some requires setting an anchor and rappelling into a three level pit, like an elevator where you could get off at different floors.
The map and the videos presented of Vortex make it appear easier to find someone when compared to a cave with multiple side passages, pits, chimneys, rockfall and breakdown, etc.