There was a lot of sand at the bottom for a short while but few steps further,it was a nice and clean 6'2" RCP.
After 500m we encountered the "3rd Connection Corner".Both RCPs connect by a round RCP hallway leading to a tiny corner where we saw a third one .(No room to step back further to get a proper over all view.)
We tried this one but it shrinked very fast. So,back to the others!