Fanfuckingtastic show. The openers, Valient Thorr and Death (punk band from the 70s, not the Chuck Schuldiner one) were surprisingly good. VT struck me as a hybrid of neo NWOBHM and 80s hard rock with none of the glam style and their singer was a hilarious and engaging front man. Death is a 3-piece, all-black punk band who are amazingly polished for what you'd expect from a punk band and had good actual singing, excellent harmonies, a few spots of LittleRichardcore falsetto, punk shouts, and excellent rock soloing, groovy bass playing (nice pentatonic fills all over the place), and very good drumming.
Mastodon opened with Tread Lightly and Once More Round the Sun. They also played what's probably my 4 favorite Leviathan tracks, Blood and Thunder, Megalodon, Aqua Dementia, and Hearts Alive. The pit basically lasted the entire show and had far better etiquette than most shows I've moshed at. The only dick was some likely-drunk cunt who thought she'd go kick and shove some dudes while taking advantage of her "I'm a girl" card but she ended up eating pavement most of the night once everyone realized whom the person was that kept blindsiding peeps
All in all, a top 10 show for me and much better than my Crack the Skye show from 2009 since we were 15-20 feet from the stage, dead center, instead of 50 feet away like at the CTS tour.
Also, I randomly bumped into Skydivingninja who is 9 feet tall barefoot and a really cool cat to shoot the shit with.