From Amboy, WA continue north on State Route 503 for about 4 miles. In Chelatchie, WA pass Mt. St. Helens National Volcanic Monument Headquarters on your left then turn right on NE Healy Road/Forest Road 54. Continue on Forest Road 54 for about 9 miles and take a left on Forest Road 57. Drive roughly 1 mile to the gravel pit on the right hand side of the road, take a sharp left onto Forest Road 5701. There are two access points on Forest Road 5701 for the Siouxon Trail. The first access point at mile marker 1 at the hairpin corner in the road is intended for horse trailers (park on the pullout on outer edge of corner); the second access point, Siouxon Trailhead, is roughly another 3 miles at the end of the narrow, rough, mostly paved road and does not accommodate horse trailers. Note: Although mostly paved, Forest Roads 54, 57, and 5701 can be rough. Pay close attention to mileages to be able to navigate in the event of damaged or missing road signs. Please drive carefully.
(The trailhead is about 18 miles from Amboy, WA)
HIKING, HORSEBACK RIDING, PICNICKING
It also provides access for fishing on Siouxon Creek.