The most prominent natural feature at Cannon Beach, Oregon, is Haystack Rock, just off shore. (It can be reached on foot at low tide.) Immediately to the south of it are three smaller rocks called, collectively, “the Needles.”
All of these, made of basalt, were created somewhere between ten and seventeen million years ago by lava flows, now mostly eroded at the shoreline, from the Grand Ronde Mountains not too far inland.
Similar flows impacted other points on the Oregon coast, creating such features as Tillamook Head, Arch Cape, and Saddle Mountain.
Posted from Seaside, Oregon