That is Palomar mountain, San Diego county, California. The mountain is on Indian Reservation land the police can not come up there unless they are requested.+2.
Maybe not the place for it though. Maybe it was 'taken on closed roads under controlled conditions'.
In our nanny state, that is a ticketed offence, costs points on the licence plus $. Get caught doing that 3 times, lose the bike permanently and be branded a hoon.