The system we are surveying is always a solo dive with a braille dive exist. We resurveyed the known system up to the 5th restriction, all our numbers corresponded with the previous survey teams. The unknown side that we are exploring was considered a terminal fill, nobody knew it existed. We were lucky that Vortex is a transitional cave, and we pushed it when the time was right. Vortex is a tough cave, there’s no doubt about it, and the section we are exploring is all technical sidemount. Now we are at stand still for further pushes deep within the system.The decision to go to rebreather was the only viable solution. Training and experience on that piece of equipment will take lots of time. The nice thing is we found several places that are no mount, that should keep our team busy for a few months!