There are all sorts of obscure names out past Roma's. I have no idea who put "Beyond the Edge" on the map instead of the "Head (as in Dragon's Head)Chutes". The Mtn. has renamed all sorts of stuff over the years, especially in the chair 9 area. Remember Scorpion and Tarantula? Now they are Gold Hill and Ricochet. One of the more well know lines on the Tail is called "Old Faithfull", because it slides after almost every storm. The "Skateboard Park" is two windlips in a row, just below "Wazoo Rock". The second one is the best, and is perfect for spinning counter-clockwise. The small chute at the far skiers left of Wazoo Rock has lots of names, none of which I can remember. It can be tricky one though, as you ski facing a rock wall until it doglegs right.
By the way, ski patrol has thier own map, and it has a few more things on it than the regular map. Ask them nicely, and they might give you a copy. Of course, last year I had to explain to the patrol dispatcher where "Woolly's Woods" was. This year there was a Mtn.wide contest to find out who MJB's was named after. Even Gary Reitman, the patrol boss did not know. My friend ET knew, and got the prize ($10 Mammoth bucks, like Disney $). ET has a run called "ET's Crack" named after him. It is the quick straightline to a small drop in the rocks at the bottom of the P2/3 ridge.
Here are a few more fun names that are not on any maps:
Scooter Pie, MGM's, Bucks, Hollywood Bowl, Berger Bowl, the Box, Half Chute, Corner Jump, House Jump, the Camel Toe/James Bond, the Chimney Chutes, Pass 'n' Pocket, Pirate's Cove, Twighlight Zone, Etc... The list goes on forever. Some of them you have probably skied without knowing it, others are unknown for good reasons. The local groms could show you some, and probably many more than I know. Anyway, Mammoth is huge, and has tons of pokes, little and surprisingly big that the locals have named and renamed over the years. Interestingly, snowboarders have different names for certain places, as either skiers never told them, or did not want them to find them. Even fairly obvious things like the rock pillar half way up chair 22 have several names. It is called "the Thumb" and "Tuttle Rock" (Tom Tuttle was a ripping skier who became a member of the US Snowboard team, and kills it on anything) depending on who you talk to.
My favorite poke? I'll never tell, but if you come visit on the right day, I might show you.