The park offers birding opportunities with species like the Pileated Woodpecker, Northern Flicker and Steller's Jay. Other birds include American Robins, Black-capped Chickadees and Dark-eyed Juncos. Birders might also spot Varied Thrushes or Red-breasted Sapsuckers in this area.

1. Beacon Rock Trail: A 2-mile round trip trail that leads to the top of a massive rock formation, offering panoramic views of Columbia River Gorge.

2. Hamilton Mountain Trail: This challenging 7.5 miles loop offers stunning vistas and waterfalls along with wildflower meadows in springtime.

3. Hardy Ridge Loop Hike: An approximately 8-mile hike featuring beautiful forest scenery and spectacular mountain views at its peak point.

4. Strawberry Island Loop Hike: Easy level hiking path around an island on the Columbia river; perfect for bird watching or picnicking by the riverside.

5. Equestrian Trails: Over five miles dedicated specifically for horseback riding through lush forests and open grasslands within park boundaries.

6. The Cape Horn Lookout Point: Short but steep half mile climb leading up to breathtaking view over entire state park area including mountains, valleys, lakes & wildlife sightings possible too!

7. Bonneville Dam Walkway: Paved pathway suitable even for wheelchairs/strollers providing close-up look at Bonneville dam operations plus chance spotting migrating salmon if season right!

8. Pacific Crest National Scenic Long Distance Path: Part this famous long:distance route passes directly through Lewis Clark State Park giving hikers opportunity experience part iconic American wilderness journey without needing commit months trekking time!

9. Hardy Falls And Pool Of Winds Viewpoint Track: Just under two:miles return walk taking you past cascading waterfall into hidden grotto where winds whip up spray creating unique natural spectacle worth seeing firsthand!

10. Rodney Falls Spur Route: Branching off main Hamilton Mountain track short detour brings visitors face:to-face another impressive cascade nestled deep amongst verdant woodland surroundings making it ideal spot cool down during hot summer hikes!

Within this natural haven, biking enthusiasts can explore a variety of trails. Be aware that some paths may be challenging.

The park offers 8 miles of bike-friendly routes for all skill levels. Always wear protective gear when cycling.

For those seeking an easy ride, the Discovery Trail is ideal but requires caution due to occasional pedestrian traffic and wildlife sightings.

Advanced cyclists might prefer the more rugged terrain found on other trails in the area; however, these require careful navigation skills and preparation beforehand.

Remember: always respect nature by staying on designated pathways while exploring via bicycle within this scenic location's boundaries.

Ensure you have adequate water supplies as well as emergency repair kits for your bikes before embarking upon any trail journey here.

Lastly, keep in mind that weather conditions could affect trail accessibility - plan accordingly to ensure safe riding experiences at all times.

There is a self-guided half-mile interpretive trail in the park, featuring information on the park's old growth forest.

Jackson House tours are available year-round by appointment. Call (360) 864-2643.

Anglers can enjoy fishing in the freshwater lake, teeming with species like rainbow trout and largemouth bass. The park also offers a variety of salmon including Chinook, Coho, and Pink Salmon during certain seasons. Fishing equipment rentals are available on-site for convenience. A valid Washington state fishing license is required to fish within the park's boundaries.