Marymere Falls

Marymere drops over rocks of the Crescent Formation, the Eocene-Oligocene sequence (roughly 55 to 30 million years old) of submarine basalts and interbedded marine sedimentary rocks that makes up the north flank of the Olympic Peninsula. These rocks erupted on the floor of the proto-Pacific as a chain of seamounts, were buried under deep-water sediments, and then got scraped up and stacked onto the edge of North America as the Juan de Fuca plate subducted under the continent. The peninsula's interior is a sediment package that got folded into a doughnut shape; the Crescent Formation forms the harder outer ring, and Lake Crescent itself sits in a glacially carved trough on that ring.

At Marymere, Falls Creek runs over a thicker, more resistant basalt ledge with thinner sedimentary interbeds below it. The creek wears the softer marine sediments back faster than the basalt, but the basalt face itself stays rough and angled rather than vertical. That is the geometry that produces a horsetail: water stays in contact with the rock for almost the full 90-foot drop, spreading across the face rather than free-falling clear of it. The same drainage produces several other horsetails in the Lake Crescent watershed; Marymere is the largest and the most accessible.

From the Storm King Ranger Station the trail crosses Barnes Creek on a single-log footbridge with a handrail, then runs nearly level through old-growth Western Hemlock, Western Red Cedar, and Douglas Fir for about half a mile. The biggest cedars on this stretch are 6 to 8 feet across at chest height and 600 to 800 years old; the hemlocks are smaller but taller, with crowns reaching 150 feet. The understory is sword fern, deer fern, salal, and Oregon grape, with the moss thickening on every fallen log as you climb.

About 0.5 miles in, an unsigned-but-obvious junction breaks left and steeply uphill: that is the Mount Storm King trail, a separate 1.7-mile climb covered below. Stay right for the falls. The Marymere trail crosses Falls Creek on a second log footbridge, then climbs 200 feet in switchbacks to a short loop with two railed viewpoints on either side of the creek and a wooden footbridge directly above the lip. The full loop above the falls is the difference between distance_loop and the simple out-and-back; walk it both directions to see the falls head-on from below and then look down the chute from above.

Most Marymere visitors are doing it as part of a Lake Crescent day, not as a standalone destination. The lake is a 624-foot-deep glacially carved trough holding some of the clearest water in Washington (Secchi disk readings regularly exceed 60 feet, which is comparable to Crater Lake). The clarity is a side effect of the watershed having very little nitrogen, which keeps algae growth down; the lake also hosts two endemic trout (the Beardslee and the Crescenti) that evolved in isolation after a landslide closed the natural outlet roughly 7,000 years ago.

The Lake Crescent Lodge (1915) is a quarter mile from the Storm King trailhead and is the practical base. The lodge has a restaurant with a porch overlooking the lake, kayak and rowboat rentals on the swimming beach, and a sun lawn that catches afternoon light. A common itinerary: paddle the lake in the morning when the surface is glass, lunch on the porch, walk the Marymere trail in the afternoon when the ravine is in shade, swim from the lodge beach to cool off before driving on. The lodge is seasonal (typically late April through January 1); if it is closed, the Storm King Ranger Station shoreline is the alternative for the lake portion.

If you want a real Olympic Peninsula day-climb out of the same trailhead, Mount Storm King is the option. The trail breaks off the Marymere approach at the 0.5-mile junction and climbs 2,100 feet in 1.7 miles to a series of summit knobs above Lake Crescent. The grade is consistently steep with no real flat sections, the lower mile is in forest, and the upper half mile gets exposed and narrow. The last 100 feet to the practical summit (the second knob, with the lake view) involves hand-placed ropes that hikers have left over the years; the NPS does not maintain them and does not endorse using them. People with vertigo, kids, or anyone in trail runners on wet rock should stop at the official end of the maintained trail.

Total round trip from the parking lot is about 4 miles with the Marymere falls added at the bottom on the way back. Allow 4 to 5 hours. Best window is mid-July through September when the upper rock is dry; spring snow and fall rain make the upper ropes section genuinely dangerous.

Marymere is open year-round and the trail itself is rarely closed. The flow swings are big, though. April through June is peak runoff from Mount Storm King snowmelt; the horsetail runs full-width across the rock and the spray reaches both viewpoints. July through early September is the busiest window because Lake Crescent peaks; the falls thins as the snow runs out but is still a clean white horsetail. Late September through October is the best balance of flow (first fall rains rebuild it), color (bigleaf maples in the ravine turn yellow), and crowds (school in session, lodge winding down).

Winter is open and quiet but the two log footbridges and the wooden stairs on the climb get slick. Hard freezes are rare at this elevation (about 900 ft); the falls does not form an ice column the way higher Cascade falls do. Microspikes are usually unnecessary but a hiking pole is helpful. Check the NPS Olympic alerts page for road closures on US-101 along Lake Crescent, which is the choke point if a winter storm closes the highway.

Waterfall shape is set by what the bedrock does below the lip. A plunge needs a hard, near-vertical caprock with a softer rock undercutting it; the water free-falls clear of the face. Snoqualmie and Madison Creek Falls (the wheelchair-accessible falls a few miles east of Marymere, also Crescent Formation but on a different exposure) both read closer to plunges. A horsetail needs a steep but not vertical rock face that stays in contact with the water for most of the drop; the water fans, spreads, and aerates as it goes.

Marymere's drop is steep but not overhanging. The basalt face has been weathered into a rough, angled chute rather than a clean wall, and the marine sediment interbeds erode at small steps that keep the water bouncing rather than free-falling. The result is the textured 90-foot smear you see from the lower viewpoint. It is also why the falls reads more dramatically in high water (when the spread is full-width across the face) than in low summer flow (when it breaks into ribbons). For a plunge-style Olympic NP comparison, walk Madison Creek Falls on the same day; the contrast is the easiest geology lesson in the park.