Triangulation Peak and Boca Cave Trail

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Willamette National Forest

Triangulation Peak and Boca Cave Trail is a 4.6 mile heavily trafficked out and back trail located near Detroit, Oregon that features beautiful wild flowers and is rated as moderate. The trail offers a number of activity options and is best used from June until October. Dogs are also able to use this trail but must be kept on leash.

Distance: 4.6 miles Elevation Gain: 1,076 feet Route Type: Out & Back

dogs on leash

kid friendly

camping

hiking

nature trips

walking

bird watching

running

cave

forest

views

wild flowers

wildlife

muddy

rocky

snow

washed out

An easy hike with fantastic views of Mt. Jefferson and a little know gem of a cave that frames the mountain in the distance.

Such a fun trail!! Got a little lost looking for the trailhead from google maps, turn down NF2233 instead of 2243. Still lots of snow but that added more fun (:

hiking
snow
9 days ago

Trailhead is accessible without driving on snow. However entire trail still has about 4-6 inches of snow on it.

hiking
closed
muddy
snow
17 days ago

Love this hike but mid May the road to the trail still had a lot of snow and no way to reach the trail head. Trail probably still had snow, mud, some down trees in the area

Road is closed 5 miles down from trail head. Got by most of that with just boots. Snowshoes first actual trail but difficult with others having post-holed. Couple of stuck vehicles and sheriffs office digging them out. Missed our summit but will try again when conditions are better. That 5 miles up road wore us out

hiking
blowdown
scramble
3 months ago

Nice trail mostly flat until you climb down to the cave but an awesome view of mt Jefferson framed by the cave as was said some blow down there is a little known climbing area there on the switchback I forget the name

hiking
snow
4 months ago

1/4/2020 Took the winter storm advisory as an excuse to make sure the AWD still works. Triangulation peak / Boca cave near Detroit Lake. We blazed the road with chains but some 4x4s played and packed it down nicely. The trail was doable with gaitors to 100 yards from summit and snow shoes needed to get to Boca cave. Deepest snow was 2 feet near the summit, much less lower down. First time here and we came away glowing with the blue bird day.

hiking
5 months ago

Didn’t actually do this hike as I missed the more detailed instructions and just followed the gps instructions. GPS will take you down a forest road the is currently restricted to cars (only snowmobile traffic allowed during snow season). The day I went, there was a sheriff at the top ticketing people/giving warnings to car traffic. Just a heads up to not follow the gps down the backroads

hiking
6 months ago

What a great day on Triangulation Peak and Boca cave. Trail is in great shape except for some down trees that you crawl over or under.

hiking
muddy
6 months ago

This was an INCREDIBLE hike! LOVED. the view of Jefferson from the peak and the cave! The trail down to the cave was a little sketchy, but totally worth it! Definitely follow the directions listed on the app! My fiance and I had some trouble trying to find NF 650 until we realized it's not properly marked and theres a wood structure to the right at the 3 way intersection and that that is the road to take down to the trailhead. Once you go onto NF 2233 take that to the end of the road, then turn right onto NF 650 (theres no sign). There is a road that looks like you'll be able to take on your right, but it ends not very far down. Make sure to take the road to the right of the wood structure and bathroom. Other than having trouble finding NF 650, the rest was AMAZING! We will definitely be coming back!

hiking
6 months ago

Great trail! Hiked on 11/02/19. So beautiful at the top and the cave is incredible. It’s challenging to find the cave so I’d recommend following a trail map. Basically when you get to the top there’s a fork in the trail. Right takes you to the peak, Left takes you to the cave. The trail to the cave gets kind of steep and hard to see which is why most people can’t find it. Totally worth the extra effort!

hiking
snow
6 months ago

This hike was truly one of my favorites! It was beyond gorgeous views! We loved the whole hiking areas, we did however have trouble finding the cave, when we went on sept 28th with the snow, we also ran into another couple who also couldn’t find it either, it’s definitely a must try again hike!

hiking
muddy
6 months ago

Great trail. There were a few trees blown across the trail and a couple spots where slides had taken place so you had to work your way through them back to the trail. Trail was muddy in some areas, still a trace of old snow on the sides and the trail was actually frozen in a few spots, but still easy to navigate. We went to the peak then attempted finding the cave but the burned out area is pretty treacherous and we didn’t want to risk the remainder of the way with our 13year old dog. Views of Mt Hood, Mt Jefferson, Three Fingered Jack and the Three Sisters were definitely worth the hike.

Cool view of 3 snowy peak mountains and a cave! Next time plan other hike that is close by.

Don’t GPS. Use directions from directions tab. It was a beautiful hike for a perfectly sunny day. Gorgeous views and worth the drive. Amazing!

hiking
blowdown
bridge out
bugs
closed
muddy
off trail
over grown
rocky
scramble
snow
7 months ago

Outstanding hike. Late October trip was icy and a bit chilly but totally worth every step. Super clean air, brisk and a little dangerous. Thin path at times but as long as you are seeing the path you're good. Boca cave was bigger than I thought. Way worth the effort. Hike this State!!n

hiking
muddy
scramble
snow
7 months ago

Got to the Trail head around 8:30 AM. No one else was there or at the end of the hike. There was a little bit of snow on the trail but it was easy to pass. The trail to Boca cave is easily passable. With the upcoming good weather, it should be a good hike for the for seeable future. There was a little bit of mud, but not a big problem.

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