If you live within driving distance of this natural wonder, and haven’t visited.... go. The harder of the 2 cave systems (upper) was completed in roughly 1hr 45min with my wife, 10 & 5 year old boys, and myself on Dec 3rd. It’s always high 30s to low 40s he cave system, so dress accordingly. Do some research before attempting the trek. Bring headlamps, flashlights, and a backup. There was only one difficult area, a lava flow that was near vertical and roughly 5ft high. I had to lift my 5 year old up to the top, and then press myself and my 30lb pack (I’m an overachiever...) up to the next level. Yeay. I recommend starting the cave crawl no later than 12:00, especially in the colder and darker months. The “skylight” roughly halfway, and the exit ladder, are both a welcome sunlight sight. Be ready to scale large crag rock piles, navigate pools of water up to a foot deep (I just skirted the side), and stare at the reflective ceilings in awe... Bring a change of socks and shoes for the drive home in the wet months, you will thank me later.
Great adventure underground. Good in any weather but bring a jacket and two sources of light, constantly cool & dark down here. Helmets are recommended.
Awesome lava tunnel. It is insanely dark so have plenty of backup batteries and light sources. Plan on spending at least an hour here. It is NOT dog friendly so do not bring your fur babies.
One of the star hidden attractions of the PNW. It's open caverns and some optional crawl spaces make it easily accessible, but adventurous. One gets the feeling isolation down in the deep, and the various formations of ancient solidified lava are understated and intricate.
Awesome, take a good flashlight and maybe a backup, there are other caves nearby but they aren't allowed to tell you where.