Preview of Mexican Underworld vol.2 Available now at aquavistafilms.com/ Features cave diving action from Pet Cemetary to the legendary Blue Abyss, a dive deep into Cenote Sac Be Ha, claustrophobic sidemount action at Palomita of system Xunaan Ha, off the beaten path south of Tulum we dive into the insane looking phreatic tunnels of Cenote Regina, currently officially closed to diving we managed to film an afternoon dive deep into the bonafide regional classic Vaca Ha, being an outsider I was allowed to film a secret cave somewhere south of Tulum, but I was blindfolded so as not to know were it is but got it all on tape, arguably the most beautiful cave in the yucatan, secret spot Cave X.