Yes is an MTBO map, there was a summer 75 race there a few weeks ago.
I heard a few comments today about a course that was set there a while ago and how there were several DNFs. I notice Adrian Jaggi won the event there recently quite convincingly and that he's entered for next weekend. Geoff Robinson told me today he's a former JMTBOC winner but that I could teach him a thing or two. He ran M20 this weekend so is riding up a course next week. Riley Martin won't be happy as he has to ride M20 on his own.