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Boundary Line Fin

Routes Sorted
L to R R to L Alpha
Butterfingers and Eagle-Eye S 
Executive Decision S 
Martian Titties S 
Schism  S 
Shorty Wanna Be a Thug S 
Twilight Chainsaw S 
Without a Hat S 

Boundary Line Fin Rock Climbing 

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Location: 45.60835, -110.9187 View Map  Incorrect?
Page Views: 4,334
Administrators: grk10vq, Kristine Hoffman (sitewide)
Submitted By: ZCMT on Dec 14, 2014
You & This Area
Best climbs for YOU in this area
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Do not cut straight through the private property below the crag! MORE INFO >>>


Relatively few people have been to the area so you will likely have the place to yourself if you decide to check it out. The wall gets sun for most of the day but the largest portion of the wall is shaded by two large Fir trees in the early afternoon. The rock here is mostly good quality limestone with sharp bullet proof sections but also some loose flakes as well. The formation ranges in slabbiness with a few bulges here and there. The top of the cliff has numerous debris strewn about so it would be smart to bring a brain bucket. The top also offers no easy access to anchors. Stick clipping is recommended for some routes. Use your best judgement and remember this area has not seen much traffic.

Getting There 

After crossing the log to the bear canyon sandstone go up and left until you see a small cairn and a trail heading north away from the sandstone along the drier part of the hillside. The trail cut off is approximately 50 feet below the "under the sea wall" just past and to the left of the stone steps someone was kind enough to build in the last year or two. The narrow side cut trail to the boundary line fin is marked with cairns every 50-100 feet. After about 5-10 minutes of travel the trees and underbrush start to thicken and the trail becomes slightly harder to follow though there are markers here as well. The path loses about 100 feet of elevation as it takes you toward a small drainage. Another 5-10 minutes will see you to the small arch on the backside of the fin.
For directions to the initial log crossing and the bear canyon sandstone see the the main bear canyon page written by Patrick Kingsbury.

Climbing Season

For the Bear Canyon area.

Weather station 8.0 miles from here

7 Total Climbing Routes

['4 Stars',1],['3 Stars',5],['2 Stars',1],['1 Star',0],['Bomb',0]

Classic Climbing Routes in Boundary Line Fin

Mountain Project's determination of the classic, most popular, highest rated climbing routes for Boundary Line Fin:
Martian Titties   5.9+ 5c 17 VI 17 E1 5a     Sport, 1 pitch, 85'   
Executive Decision   5.10a 6a 18 VI+ 18 E1 5a     Sport, 35'   
Twilight Chainsaw   5.10d 6b+ 21 VII+ 21 E3 5b     Sport, 1 pitch, 70'   
Schism    5.11a/b 6c 23 VIII- 23 E3 5c     Sport, 1 pitch, 30'   
Without a Hat   5.11c 6c+ 24 VIII- 24 E4 6a     Sport, 1 pitch, 50'   
Shorty Wanna Be a Thug   5.12a 7a+ 25 VIII+ 25 E5 6a     Sport, 1 pitch, 35'   
Browse More Rock Climbing Classics in Boundary Line Fin

Featured Route For Boundary Line Fin
Rock Climbing Photo: Executive Decision 10a

Executive Decision 5.10a 6a 18 VI+ 18 E1 5a  Montana : Bear Canyon : Boundary Line Fin
This little diddy starts on a broken section of rock. Stand up, clip a bolt to your right and gracefully dance your way up the slab to bolt #2. Now vertical, traverse right to the most obvious weakness and follow it to the anchor....[more]   Browse More Classics in Montana

Photos of Boundary Line Fin Slideshow Add Photo
Rock Climbing Photo: Twilight Chainsaw, 10d
Twilight Chainsaw, 10d
Rock Climbing Photo: Up high on Twilight Chainsaw
Up high on Twilight Chainsaw
Rock Climbing Photo: SWBAT
Rock Climbing Photo: A fun 10+
BETA PHOTO: A fun 10+

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