Length: 5.5 Km's Elevation: 160 m Dogs: Yes on leash Pit Toilet: No Ten Essentials: Yes
Park on Sandringham Dr & Whatcom Rd. Go up the gravel path with blue sign that reads, 'Lower Sumas Mtn Park.' Follow gravel TR up and cross road and go through red barriers. Carry on up gravel road to just before the red, No Trespassing sign on gate. There's a dirt trail on your right, take this.
First part is steep & muddy for a few hundred meters then your in the trees but still climbing. You'll come to a 'T' carry on straight. There's red new flagging tape. The trail keeps snaking up. After a few metres another 'T' intersection. Keep straight. It's marked with the same flagging tape. Shortly after and the steepest part of the trail. Once at the top there's another 'T' go right. Now the trail levels and you can see your first sand stone rocks. They go on for about .5 km. Some you can crawl in and under. Lots of wooden bridges as the trail goes along. Then the trail goes down, levels and starts to switchback down and now you're looking up at the cliffs. After the first switchback we could see a crashed car straight down the hill. There's a faint trail down to the car. Head down and see the car. Once done go to the right/west to see a cave. One you can crawl inside. After you have had your fun keep following trail to yourfirst 'T' you came up along earlier in the day and go left down the steep trail to gravel path. Cross the road and continue down gravel path to where you parked.
The trail is steep, muddy and slippery. Gators, spikes and poles are good. I suggest a head lamp if you want to use it to see inside some of the tunnels.
These are biking trails so be mindful that bikes may be on the trail.