Terrace Trail and Waterline Trail

Starting your adventure near King County, Washington, the Terrace Trail and Waterline Trail loop offers a captivating journey through lush forests and serene landscapes. This 10 km (approximately 6.2 miles) loop trail features an elevation gain of around 300 meters (about 984 feet), making it a moderately challenging hike suitable for those with a bit of experience under their belts.

### Getting There To reach the trailhead, you can drive or use public transportation. If driving, head towards the nearest known landmark, the Cougar Mountain Regional Wildland Park. The trailhead is conveniently located near the Red Town Trailhead, which can be accessed via Lakemont Boulevard SE. For those using public transport, King County Metro Transit offers bus services that can drop you off near the park entrance. From there, it's a short walk to the trailhead.

### Trail Navigation Using HiiKER for navigation is highly recommended to ensure you stay on track throughout your hike. The loop is well-marked, but having a reliable navigation tool can provide peace of mind.

### The Hike The trail begins with a gentle ascent through dense forest, where you'll be surrounded by towering Douglas firs and western red cedars. As you progress, the trail becomes steeper, offering a good workout and rewarding you with stunning views of the surrounding landscape.

#### Significant Landmarks At approximately 2 km (1.2 miles) into the hike, you'll come across the De Leo Wall viewpoint. This spot offers panoramic views of the Issaquah Alps and is a perfect place to take a break and snap some photos.

Continuing along the trail, you'll reach the Waterline Trail section around the 5 km (3.1 miles) mark. This part of the trail runs parallel to a historic waterline that once supplied water to the nearby coal mining operations in the late 19th and early 20th centuries. The remnants of this waterline add a touch of historical significance to your hike.

### Flora and Fauna The trail is rich in biodiversity. Keep an eye out for native wildlife such as black-tailed deer, coyotes, and a variety of bird species including woodpeckers and owls. The forest floor is often carpeted with ferns and mosses, creating a lush, green environment that is particularly vibrant in the spring and early summer.

### Elevation and Terrain The total elevation gain of around 300 meters (984 feet) is spread out over the course of the hike, with some steeper sections that may require careful footing, especially after rain. The trail is a mix of dirt paths and rocky sections, so sturdy hiking boots are recommended.

### Final Stretch As you near the end of the loop, the trail descends gradually, leading you back through the forest to the trailhead. This final section is a great opportunity to cool down and reflect on the diverse landscapes and historical elements you've encountered.

### Preparation Tips - Bring plenty of water and snacks, as there are no facilities along the trail. - Dress in layers, as the weather can change rapidly. - Use HiiKER for real-time navigation and updates on trail conditions. - Be mindful of wildlife and practice Leave No Trace principles to preserve the natural beauty of the area.

This hike offers a perfect blend of natural beauty, moderate challenge, and historical intrigue, making it a must-visit for any hiking enthusiast exploring the King County region.