The land on which Boring was built was a former lava field. The Boring Lava Field, which takes its namesake from the community, is located just north of Boring. There are approximately 80 lava vents across the area, remnants of the volcanic activity that occurred there roughly 2.6 million years ago. The lava field extends across surrounding Portland and Vancouver, Washington, though the volcanic centers are extinct. The land that would later become Boring had no known inhabitants, though the Clackamas Tribe had a camp located south of Boring, near present-day Oregon City, along the Willamette River. By 1855, the remaining members of the tribe had relocated to the Grand Ronde. Settlers began to arrive in the Oregon Territory in mid-1800s via the Oregon Trail, after the establishment of Portland.