Likely places:
Glastonbury Grove
Owl Cave
Wherever the Secret History of Twin Peaks is stashed
The Convenience Store
Somewhere else
What do you think? Also, do you think the coordinates on Ruth Davenport's arm lead to the same place as Major Briggs' message?
Right where Jerry Horne is trying to re-enter the lodge. I think he's in the right place/wrong time.
Jack Rabbit's Palace near Listening Post Alpha. As kdawg says, I suspect very close to where Jerry has been stuck and where Bobby, Hawk, Truman, and Andy are headed in a "couple days"
The coordinates lead to Ansaldo Lake, look it up at: 48°53'53.9"N 117°55'28.1"W