When visiting last Christmas, we parked at a gated fire road access on Road 476 between Road 1206 and Thompson Creek. I think the gated fireroad's number was 5018? We climbed 5018 (more like doubletrack than any type of "road") to the left branch of Horse Cove Gap...took that to Squirrel Gap, which was an awesome gravity rush in this direction (BTW..we had two newbie-ish riders and they faired very well, only walked two short sections). Once at the bottom, we crossed a large suspension bridge and hung a right to climb up South Mills River Trail?? to Grassy Ridge (coming close to Buckhorn Gap at the summit) then jetted down the other side of South Mills River Trail, popping out at the end of Road 476 and cooled down riding back to the car.
It was an awesome ride!!! We passed some strange shelter type thing on South Mills about half way up....just kept right on pedalling..never know who you'll run into out there...another reason to not be this far out alone.