Tumac Mountain and Twin Sisters Lakes

Yakima, Washington 98904

Tumac Mountain and Twin Sisters Lakes

Tumac Mountain and Twin Sisters Lakes Professional Review and Guide

"On this hike in the William O. Douglas Wilderness, you’ll hike to the summit of the young volcanic cone of Tumac Mountain and across a volcanic plateau dotted with dozens of lakes ranging from deep, several-acre gems to shallow, marshy ponds. Spending a night at Twin Sisters Lakes will allow you more time to explore the geologically unique southern half of this wilderness area.

The volcanic Tumac Plateau, littered with dozens of lakes and ponds, stands in stark contrast to the jagged peaks and glaciers of Mount Rainier to the west, the alpine range of Nelson Ridge to the east, and the craggy headwaters of the Bumping River to the north."

Tumac Mountain and Twin Sisters Lakes Reviews

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Really need to visit this place from July to Sept (although in Sept be prepared for odd and ever changing weather). Very busy hike with a lot of people and a very nice one! While the elevation gain is pretty good, it's not long and even kids seem to have no problem going up (once in a while a kid complains when coming down). Take frequent breaks - you will want to anyway, especially on a day where the sun shoot rays down to the vegetation. Once you reach the top, there is the little of the Twin Sister lakes and once you reach the lake you can see Tumac Mountain - a lot of times with a beautful reflection in the water if it's a nice calm day. Bring DEET and any other chemical you can use to keep the bugs off as the mosquitos are out in force until the frost comes in Sept.
3/30/2000: Lots of snow.

Tumac Mountain and Twin Sisters Lakes Photos

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Trail Information

Nearby City
1,890 feet
Elevation Gain
Trail Type
Skill Level
5 hours
July through October
Wenatchee National Forest, Naches Ranger District
Local Contacts
USGS White Pass, Bumping Lake
Local Maps

Activity Feed

Jul 2018