4 results
    1

    Oregon Grotto

    912 NW 50th St, Vancouver, WA    
    Caving 

    0 out of 5 based on 0 ratings

    3rd Fri. Round Table Pizza 616 N.E. 81st St. Vancouver, WA nssio.org

    2

    Willamette Valley Grotto

    3580 SW 104th Ave, Beaverton, OR    
    Caving 

    0 out of 5 based on 0 ratings

    2nd Fri. 7:30 p.m., West Linn High School, Geology Rm.705 nssio.org

    3

    Ape Cave

    10600 NE 51st Cir, Vancouver, WA    
    Caving 

    5 out of 5 based on 3 ratings

    Ape Cave is a lava tube, located south of the infamous Mount St. Helens in Gifford Pinchot National Forest. It was formed by a lava flow from Mount St. Helens about 1,900 years ago. It is of rather impressive size, and was... showcaves.com

    4

    Trout Lake Ice Cave

    10600 NE 51st Cir, Vancouver, WA    
    Caving 

    0 out of 5 based on 0 ratings

    The Forest Service has constructed a wooden ladder beneath the main entrance. showcaves.com