Smith's Crack - Cave near Mountain Home, Idaho
Mountain Home,Idaho
43.23028200765, -115.8378799523
10.0 miles NW of Mountain Home, Idaho
GPS: 43°13'49.0"N 115°50'16.4"W
Maps | Directions
State: Idaho

Cave

Located near Mountain Home, this is unlike most caves in the area. It's not a lava tube but a fissure. A crack that opened when the lava cooled. The entrance is closest to the corner. For the most part there are arrows pointing which way to go. The entrances and exits in some rooms took us a long time to find so be prepared for a couple of hours underground. Just before the cave decends to the bottom of the lava flow there is a good 20 ft vertical drop. After the bottom the caverns slowly begin th regain altitude, eventually leading to the exit, abut 100 yards north of the entrance.

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  1. Plan Ahead and Prepare
  2. Travel & camp on durable surfaces
  3. Dispose of waste properly
  4. Leave what you find
  5. Minimize campfire impacts
  6. Respect wildlife
  7. Be considerate of other visitors

Directions

From Mountain Home, Idaho

  1. Head southwest on E 2nd N St toward N 4th E (121 ft)
  2. Turn right at the 1st cross street onto N 4th E (377 ft)
  3. Turn left at the 1st cross street onto American Legion Blvd (0.1 mi)
  4. Turn right onto I-84BL W/N 2nd E St/Old U.S. 30 W
    Continue to follow I-84BL W/Old U.S. 30 W
    (3.6 mi)
  5. Turn left onto Ditto Creek Rd/Old Oregon Trail Hwy
    Continue to follow Old Oregon Trail Hwy
    (5.4 mi)
  6. Turn left toward Cinder Butte Rd (499 ft)
  7. Continue onto Cinder Butte Rd (0.1 mi)
  8. Turn right
    Destination will be on the left
    (1.1 mi)
or

From Boise take the first mountain home exit. immediately after you pass the gas station take a right and head up the old highway. Then take the second left that allows you to cross the tracks. just after the tracks take a right through a BLM gate and follow the road until an obvious parking area on the left.

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Guest Review/Comments

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albertsondallas

2/6/24 9:11 am 8/1/23
This cave is no joke. There are several drops and climbs, very easy to get hurt. My friend almost died coming out of the cave when he grabbed a loose rock, he could have literally fallen to his death. There is also lots of bird poop, trash, fungus, and we even saw a snake. Dangerous but super thrilling. Proceed with caution, don't go during wet seasons, and bring a guide if you can. Follow the arrows!
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