Please check this post on RCGroups for full details:
https://www.rcgroups.com/forums/showthread.php?3101386-Mammoth-Mountain-CA-Aug-24-26
Been wanting to put this event together for a couple of years. This is the year it starts! This is an excellent site and should be on everyones bucket list! I don't care what kind of gliders you fly, you should consider coming to this event. Already shaping up very nicely despite the short notice. This should grow into a very large event in the coming years.
-Wayne