If you can make your way to the Teton NF and willing to take the jeep on a little lite off roading, you can expect to see the below pics in person. It's absolutely gorgeous. I promise you won't regret it. If you take the sevrice road I'm thinking about, you'll crest the hill and the rest is schock and awe. The first words out my mouth were "oh my God".
The last pic would be the sign you're looking for. Take that service road all the way to the top, bearing right along the way. The left also has spectacular views and some boondocking spots. If you have levelers, you may not have enough clearance to get your rig up there. Scout it with the jeep first. I only included the truck pic to show it is VERY doable. The tuck is 2wd, 5spd so I know the jeep is more than up to it.
The service road if off the same road as all the Teton pull outs. You just have to keep driving. If you come from the Jackson Hole side, keep driving and pay attention to the right hand side.
It's too bad you didn't have some time to stop off at the Hungry Horse Reservoir while visiting Glacier NP. It's a really nice place. If you find yourself getting tired, you can boon dock most anywhere in Columbia Falls. If I remember correctly, Hungry Horse is south on RT2 going towards Kallispell, not far from the KAO. You can scout that in the jeep if you feel like it. Montana is EXTREMELY RV friendly.
Safe travels and have a great time!
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