The Columbia's mouth had a talent for hiding from European explorers. Before Meares, Spanish explorer Bruno de Heceta spotted both Cape Disappointment and Point Adams -- the headlands flanking the river's entrance -- but illness aboard his ship prevented further exploration, and currents drove him back to sea. He noted in his log that a river mouth likely existed somewhere nearby. Captain James Cook sailed the same coastline in 1778 and missed the entrance entirely, defeated by bad weather. George Vancouver passed through in April 1792, saw Meares's Cape Disappointment, and agreed with the earlier assessment: no river here worth entering. It took Captain Robert Gray, an American trader, to finally cross the bar on May 11, 1792, formally establishing the United States' claim to the region. The river had been there all along, draining a quarter-million square miles of the American interior, pouring millions of gallons into the Pacific every second -- and yet one explorer after another had looked at its mouth and turned away.

Cape Disappointment sits at the extreme southwestern corner of Washington state, a rocky headland jutting into the collision zone where the Columbia River meets the Pacific Ocean. The Columbia Bar -- the shallow, shifting sandbar at the river's mouth -- is one of the most dangerous navigational passages in the world, known to mariners as the "Graveyard of the Pacific." Conditions here are violent and unpredictable: ocean swells from the west slam into the river's outgoing current, producing standing waves, boils, and crosscurrents that can overwhelm even large vessels. The Coast Guard station at Cape Disappointment is one of the busiest in the country, with crew members responding to 300 to 400 calls for assistance every year. It is also the home of the National Motor Lifeboat School, where Coast Guard surfmen train in heavy weather -- because the water at the Columbia's mouth reliably provides it.

The Cape Disappointment Lighthouse, first lit in 1856, was built to guide ships past the treacherous bar. But the cape's own bulk created a blind spot: vessels approaching from the north could not see the light until they were dangerously close to the rocks. In 1898, the North Head Lighthouse was added on the cape's ocean-facing side to cover the gap. Together, the two lights bracket the headland -- one facing the river, one facing the sea -- their beams cutting through the fog that rolls in from the Pacific with a persistence that borders on geological. Standing at North Head on a clear day, you can see the Oregon coast to the south and the Long Beach Peninsula stretching north, a narrow ribbon of sand separating Willapa Bay from the open ocean. On a foggy day, you can see approximately nothing, which is the more typical experience.

When Lewis and Clark reached the Pacific coast in November 1805, they camped near Cape Disappointment -- the endpoint of a journey that had begun in St. Louis seventeen months earlier. The Lewis and Clark Interpretive Center now perches on the cape's cliffs, offering views of the river mouth that Meares failed to recognize and Gray finally entered. Cape Disappointment State Park surrounds the site, an affiliate of Lewis and Clark National Historical Park, and its trails wind through old-growth Sitka spruce forest down to the lighthouses and the rocky shore. The park draws visitors who come for the history, the whale watching, the hiking, and the peculiar satisfaction of standing at a place whose name commemorates failure. Meares got it wrong, but the name stuck -- and there is something honest about a landmark that admits the story of its discovery is really a story about what was missed.