Longview North / Mount St Helens KOA Journey — RV Camping in Castle Rock, WA

Ideally positioned in Castle Rock, Washington, the Longview North / Mount St. Helens KOA Journey serves as a premier base camp for exploring one of the Pacific Northwest's most iconic natural wonders — Mount St. Helens National Volcanic Monument. Located just off Interstate 5 at 167 Schaffran Rd, this campground offers convenient access to the region while keeping travelers close to the volcanic landscape, lush forests, and scenic byways of southwestern Washington. Big rig-friendly pull-throughs and full hookups — including 30-amp electrical, water, and sewer connections — make this KOA well-suited for RVers of all setups. On-site amenities include Wi-Fi, cable TV, hot showers, laundry facilities, picnic tables, restrooms, and a dump station, ensuring a comfortable stay. Pets are welcome, making it a great stop for traveling families with four-legged companions. Beyond the campground, guests can explore the Mount St. Helens visitor centers, hike volcanic trails, fish the Cowlitz River, or visit nearby Castle Rock and Longview. Whether passing through on an I-5 road trip or spending several days discovering Washington's volcanic history, this KOA Journey delivers reliable facilities in a convenient Pacific Northwest setting.