The name refers to the Tolowa people, an indigenous tribe whose homeland was in the area, and relatively undisturbed previous to American colonization in the 1850s. Their oral history includes stories of tectonic activity along the Cascadia subduction zone which has caused local sea level changes at intervals of several centuries. The park remains within a tsunami hazard zone and the plain may support fresh water wetlands or Sitka Spruce forests following uplift events and salt marsh or inundated shellfish beds following subsidence events.