Explore 2016 - view hand-curated trail maps and driving directions as well as detailed reviews and photos from hikers, campers and nature lovers like you.

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it’s almost an hour hike to the top and 1 hour return, very beautiful on the top, but super dangerous. Totally not recommended for those who hike with kids, some people have fallen and died from the ledge, but it worth it, amazing view when you reach the ledge.

We needed more time! Almost made it to the top. We will be back!

hiking
20 hours ago

I went on 11/3/2018 with my husband, our 7 year old, 3 year old and a friend. You will need to drive over the bridge, park on the left hand side in that little area. Then walk back over and go over the guard rail, there will be a cable with pegs to help you down onto the trail. We had to pick up our kids and carry them down. The trail is very muddy, so I recommend boots instead of tennis shoes. There's a couple buildings and a car on the trail. There will be a fork where you can either go up or continue straight on the trail. If you go up there's an old schoolhouse. The bottom part of the trail, we ended up going off the path to the river. There's a little camping spot and then a little beach area where you can get a better view of the river. Overall it was a good hike. Very easy for kids and dogs after you get down from the bridge. This is also a trail for offloading vehicles so be aware. There were several dirt bikes that zoomed past us. **Also, be careful of certain people. There were a couple locals that were trying to get people away from the trail by telling them there were ruins of another town down the road. Several people including ourselves drove the directions they gave us and it lead to a dead end. Also, encountered some angry locals as well on another day that were at the bridge.

Two words... HEATED RESTROOMS. (Located at the trailhead). Great amenities for a chilly November morning!!! Arrived at 830am to an abundance of parking... Much fuller around 230pm when leaving... Only saw about 15 others total throughout the day. A few super respectful dog owners (Appreciated!!!)/trail runners and mushroom foragers (How PNW of them...). Overall easy hike with well maintained trails... Great views of the falls. A missed off-shoot did head us up a steeply inclined maintenance road... What's another 6 miles???

Get there early. Excellently maintained trail. Great view from the middle.

Great hike for the first two lower falls, the last one really is a killer for the stairs to get to the top falls!

I’ve done this hike so many times now. It will probably always be my favorite! It’s great for those who are new to hiking, or haven’t in a long while getting back into it. It had a nice steady incline until you reach the last stretch of stairs. The views are amazing!

hiking
1 day ago

Great trail, plenty of switchbacks to help break up the incline but plan to go earlier in the day if you want the trail to yourself because it’s pretty popular and the trail can get pretty packed.

hiking
2 days ago

Just did this trail today. It was my sister and my 2 children ages 11 and 8 and they loved it! We did Ape Trail that was above ground and once we got done we walked back and then went underground. I’m not sure which one we did I’m seeing a lot of posts where people say they did the Upper Cave area but crawled and we didn’t crawl at all. It was an open area cave but pitch black. I used a head flash light and my cell light and my kids had their own lights as well. We didn’t finish the cave trail due to my son sprang his ankle . The terrain is very unsteady so watch your step. Other than that it was really fun and awesome. I’m definitely coming back but more in the spring or summer time. Happy Hiking!

Is amazing!

Short 2mi. round trip hike. The bridges are a little slick during the Winter months. Beautiful hike and the cave is breathtaking! A child friendly hike.

Great as long as you go early

Insanely crowded. I felt like I was in a single file line going up.

Did the upper caves (the challenging ones) and absolutely adored it. It gets a bit challenging in some parts but I wouldn’t consider it very hard. I enjoyed all the way.
I would recommend wearing a nice coat since the temperature is Lower downt there and definitely two sources of light (head lamp and flashlight will do) some light gloves might be helpful as well and I wouldn’t take kids younger than 8 or 9 (not only for the physical part but the fact that it’s completely dark and might find it scary)

By the way, you will need a permit in dashboard of the car to park in the lot.

Our gps said there was a road closure but that was false. Got there with no issues. At some point the cave has collapsed a large portion. see pics. There is also a huge crack on the left side of cave. Also a crack in the upper center piece of the cave. Hiking baby did not go inside the cave. I went in and walked towards the back and there is an amazing waterfall in the back of the cave. After leaving the cave went further down the trail and if you stand next to the small opening you can feel a draft like a fan. Pretty neat. Further down there is another waterfall.

7 days ago

The trail itself is great, but it's heavily trafficked

hiking
8 days ago

Did both caves. Did this hike without hiking baby. And I would never do this with hiking baby. Helmet is a good idea for upper trail. Recommend 2 sources of light. 1 for use 1 for backup. You do not want to be in the upper cave without light. Rope is installed for 8ft climb. Was completely alone on upper cave. Honestly not smart to do upper cave alone. Learned my lesson on that one. I am a big guy and there is a lot of tight spaces. But I did it with a camera bag and backpack. Was alone for most of the lower cave.

backpacking
8 days ago

I got engaged on Mount Si! Great day to go for a hike. Very clear and the trail was well maintained. There is a small spot where a tree has fallen over the trail and people have made a trail through it, but coming back down it’s hard to tell where it is. All over perfect day.

It was an easy hike... it got cold at the top. Enjoy the hike.

The trail is nice. It’s a good scenic trail with lots of cool places to stop and take pictures. The only bad thing is it’s a popular trail. Once you get to the top, you’ll be fighting for places to stop and take a break or pictures. We went on a Saturday morning and we were at the top with about 50 other people who had the same idea as we did today. The parking lot fills fast and people started parking on the street before the parking lot. So, we’ll definitely go back on a Wednesday morning or something so it won’t be so crowded.

good for kids

hiking
11 days ago

Really nice hike with beautiful view points!

12 days ago

Easy trail. The ice caves are very cool. If you go inside of them there is a waterfall at the end. Because the caves are melting the ice drips from the roof, so prepare to get wet. Bring a flashlight.

such a beautiful trail. can't wait to go back

It was beautiful trail inside and out. We had our 1 year old son on my husband's back and were able to do about 95% of the cave until it was just too small to crawl through with a child on your back. the terrain is a but rough for a child under 4 to walk. We loved it.

trail running
15 days ago

Great hike for all age groups. If you’re not a beginner, I’d recommend trail running as well. Breathtaking views from the cliff. You can continue further if you wish as the trail continues further. Took us 3 hours from car to car including breaks. Would highly recommend for sunrise.

Steep for kids, but amazing views and great lookout at the top. Mountain stream just over halfway up.

hiking
17 days ago

K and I did this one in the rain. The Falls look great. Per NOAA the Skykomish flow was over 35.2 KCFS. The trail is in good shape, not too much of a crowed.

Super easy hike to the really cool caves!

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