Boulder Lake (Washington)

Boulder Peak is a peak located in Washington state, in Olympic National Park. The mountain is accessible by using the Olympic Hot Springs Trail and the Appleton Pass trail. These two trails lead to Boulder Lake located at the base of Boulder Mountain where there is a campground. There are no official trails to the top of the peak, but one can find a beaten path and with a fair amount of scrambling can reach the summit. The summit offers views of the surrounding Olympic Mountains and various lakes. The round trip from trail head to summit is approximately 13 miles.

Mount Appleton is a 6,000+ ft (1,830+ m) double summit mountain located in the Olympic Mountains, in Clallam County of Washington state. It is set within Olympic National Park and is situated northwest of Appleton Pass. Its nearest higher peak is South Appleton (6100+ ft), 0.33 mi (0.53 km) to the south. Precipitation runoff from Mount Appleton drains into the Sol Duc River, and Boulder Creek which is a tributary of the Elwha River, thence into the Strait of Juan de Fuca.

Seven Lakes Basin is a formerly-glaciated mountain lake basin located at the headwaters of the Sol Duc River in Olympic National Park. A hiking trail to the basin is 19 miles (31 km) round trip with about 4,000 feet (1,200 m) of elevation gain. The loop trail starts by following the Sol Duc River near Sol Duc Hot Springs, traversing south past Sol Duc Falls before beginning a rapid elevation gain to eventually arrive at the High Divide separating the Hoh River valley from the Sol Duc valley, with views across the Hoh Valley to Mt. Olympus to the south. While the basin itself in late summer is a barren rocky landscape, it is surrounded by high elevation old-growth forest and alpine meadows lush with wildflowers and wild blueberries. Despite the name, Seven Lakes Basin, there are actually eight small lakes and numerous tiny ponds in the area. These lakes are Sol Duc, Long, Lunch, Morgenroth, No Name, Clear, Round, and Lake No. 8. The largest lake is Sol Duc and the smallest is Morgenroth. Other subalpine lakes encountered along this loop trail below the High Divide which are not considered part of "seven lakes" include Heart Lake and Deer Lake. Heart Lake gets its name from its distinctive heart-like shape. Black Bear, marmots, black-tailed deer and Olympic Elk are common in this area. Fishing is a popular activity in the area, although there are no fish in Heart Lake and several of the other smaller lakes in the basin.

The Canyon Creek Shelter, also known as the Sol Duc Falls Shelter, is a rustic trail shelter in Olympic National Park. It is the last remaining trail shelter built in the park by the Civilian Conservation Corps (CCC) from Camp Elwha. The shelter was built in 1939, shortly after Olympic National Park was established from the U.S. Forest Service-administered Mount Olympus National Monument. Two similar shelters were built at Moose Lake and Hoh Lake, neither of which survive. The one-story log structure is T-shaped, with a projecting front porch crowned by a small cupola. The shelter is open to the front porch.The shelter was listed on the National Register of Historic Places on July 13, 2007.

Bogachiel Peak is a 5,478-foot (1,670 m) peak in the Olympic Mountains of Washington, U.S.. It is located in Olympic National Park, and is a high point on the High Divide separating the Hoh River and Sol Duc River valleys, and forming the southern rim of Seven Lakes Basin. The peak is situated at the headwaters of the Bogachiel River. The name "Bogachiel" is a corruption of the Quileute words bo qwa tcheel el, or /boqʷač'íʔl/, from /bó:q'ʷa/, "muddy", and /číʔlowa/, "water", meaning "gets riley [turbid] after a rain", "muddy waters", or, less likely, "big river".

The Olympus Guard Station near Port Angeles, Washington was built in 1930s. It was built by the U.S. Forest Service and was designed by architects of the U.S. Forest Service. It is located about nine miles backcountry, within what is now the National Park Service-administered Olympic National Park.It was listed on the National Register of Historic Places in 2007. It has also been known as OGS and as Olympus Guard Station Historic District. The NRHP listing included five contributing structures and one contributing building on 2 acres (0.81 ha).

Cat Peak is a 5,940-foot (1,810-metre) mountain summit within Olympic National Park in Clallam County of Washington state.

Sol Duc Hot Springs is a resort located in Olympic National Park, Washington state, that is best known for its soaking pools, hot tubs, and a swimming pool that are heated with the nearby hot springs. The resort is situated in a valley carved by the Sol Duc River. The springs, known to local Native American tribes for their therapeutic value, first came to the attention of settlers in the 1880s. An elaborate resort opened up in 1912, and was characterized as "the most noted pleasure and health resort on the Pacific Coast" until it burned down in 1916. The resort was rebuilt on a much less grand scale in the 1920s, and was operated into the 1970s until it ran into trouble with its thermal spring in the 1970s. These problems were overcome, and the resort was rebuilt in the 1980s. It continues to operate until this day, attracting thousands of visitors a year. Also located in the area is the undeveloped Olympic Hot Springs.

The Eagle Ranger Station, also known as the Eagle Guard Station and presently known as the Sol Duc Ranger Station, is a complex of three buildings built in the 1930s in what would become Olympic National Park. The primary structures were built by the U.S. Forest Service in what was at the time the Olympic National Forest., While the main residence was built by the USFS, the generating plant and landscaping were built by the National Park Service using labor provided by the Civilian Conservation Corps.The ranger station residence was built in 1936, using wood-frame construction. The 1+1⁄2-story house is a simple gabled structure with an asymmetrically placed porch framed in timbers. The residence is clad in large singles. A large window on the front elevation is divided in the middle by a heavy mullion, with transoms over both units and twelve lights divided by small muntins. Other windows are six-over-six double-hung sashes Rustic shutters with pine-tree cutouts frame the windows, echoing the USFS pine tree symbol. The house is consistent with the Forest Service's standard construction style, incorporating features of bungalow and rustic construction.The garage was also built in 1936. The one-story structure is of wood-frame construction and is clad in shingles The 1940 generator house was built by the CCC. The one-story frame structure is capped with a hipped roof and topped by a cupola. It lies about 50 feet (15 m) to the east of the residence.The Eagle Ranger Station was added to the National Register of Historic Places on July 13, 2007.

Lake Mills was a reservoir in Olympic National Park, Washington, United States, that existed from 1927 to 2012. It was formed by the Glines Canyon Dam on the Elwha River and was located about 13 miles from the mouth of the river on the Olympic Peninsula. The lake was formed in 1927 with the completion of the dam and after the lowland forest that occupied the river bottom was clear-cut. With no fish passage facilities, the dam blocked passage of anadromous Pacific Salmon from the upper 50+ miles of the Elwha watershed located within Olympic National Park. The Elwha Ecosystem Restoration project included the removal of the Glines Canyon Dam in 2014. The lake was fully drained by October 2012, leaving only sediment upstream of the former dam site. Olympic National Park crews are revegetating the area to speed up ecological restoration and improve the habitat for the return of the salmon. Lake Mills was a habitat for rainbow trout, bull trout, and Dolly Varden trout which used the lake as their adult habitat because the dam blocked access to the Pacific Ocean. It is expected that, following removal of the dam, these fish will return to their natural anadromous lifestyle.

Glines Canyon Dam, also known as Upper Elwha Dam, built in 1927, was a 210-foot (64 m) high concrete arch dam built on the Elwha River within Olympic National Park, Clallam County, Washington. It was located 13 miles (21 km) upstream from the mouth of the Elwha River at the Strait of Juan de Fuca, and about 8 miles upriver from the Elwha Dam. It impounded Lake Mills reservoir. The dam was demolished in 2014 as part of the Elwha River ecosystem restoration project; as of 2015 it is the tallest dam ever to be intentionally breached. The Glines Canyon Dam was the largest dam removal ever.

Wolf Creek Falls is located in Olympic National Park in Clallam County, Washington approximately 10 miles (16 km) south west of Port Angeles, Washington. The falls is located on Wolf Creek, a tributary of the Elwha River. The falls is a tiered falls with drops totaling about 100 feet.