Radiocarbon dating places the mudslide at around 1560, though some estimates suggest a later event around 1700. The Makah oral history remembers it simply as the 'great slide.' The village of Ozette sat on the open Pacific coast near Lake Ozette, one of five major Makah settlements on the northwestern Olympic Peninsula. It was the tribe's primary whale-hunting village, positioned for direct access to the gray whales and humpbacks that migrated along the coast. When the hillside gave way, it buried at least six longhouses under a thick blanket of anaerobic mud -- mud so dense and oxygen-free that it preserved wood, fiber, and other organic materials that would normally decay within decades. The village itself was not abandoned. Other parts of Ozette continued to be occupied. But the buried section remained sealed, its contents untouched, until the twentieth century.

Richard Daugherty, an archaeologist from Washington State University, had excavated test pits at Ozette in 1966 and 1967. He suspected something significant lay beneath the surface, but funding and momentum were limited. The 1970 storm changed everything. Tidal erosion exposed artifacts in such quantity and quality that a full excavation became urgent before the ocean destroyed what the mud had preserved. University students worked alongside Makah tribal members under Daugherty's direction, using pressurized water to wash centuries of mud from the collapsed structures. The technique was delicate -- too much pressure would damage the artifacts, too little would not clear the dense clay. The excavation continued for eleven years. It produced more than 55,000 artifacts, a staggering haul that represented every dimension of Makah life: whale and seal hunting gear, salmon and halibut fishing equipment, toys and games, bows and arrows, baskets, and decorative carvings.

Of the 55,000 artifacts recovered, roughly 30,000 were made of wood. This is extraordinary. Wood is among the first organic materials to decay in archaeological contexts, usually disappearing within a few decades of burial. The anaerobic conditions of the mudslide -- dense clay with almost no oxygen -- stopped the decomposition process. What emerged from the ground was a material record of a culture that built almost everything from cedar: longhouses roughly thirty by seventy feet, divided into five living quarters each; canoes for ocean whaling; tools, containers, and ceremonial objects. Because Ozette was buried before significant European contact, and before the epidemics of smallpox and other diseases that devastated Northwest Coast populations, the site provides an unusually clear picture of a society as it existed on its own terms. There is no contamination from trade goods, no distortion from the pressures of colonization.

The artifacts from Ozette now fill the Makah Cultural and Research Center in Neah Bay, which opened in 1979 under the leadership of tribal chairman Edward Eugene Claplanhoo. The museum includes a full-scale replica of a cedar longhouse, along with whaling, fishing, and sealing canoes recovered from the site. For academics, the collection is one of the most important archaeological assemblages in North America. For the Makah, it is something more personal -- tangible evidence of a way of life their oral traditions had always described but which mainstream scholarship had never fully credited. In 1997, a delegation from Mihama, Japan traveled to the Ozette area to commemorate three Japanese sailors whose ship, the Hojun Maru, ran aground nearby in 1834 after drifting for fourteen months on the Pacific. The sailors were briefly held by the Makah before being taken to Fort Vancouver. The ceremony connected two distant cultures through a single stretch of coastline where currents, storms, and mudslides have been shaping human history for thousands of years.