The ground beneath Tuluwat village is an enormous clamshell mound (or midden). This mound, measuring over six acres in size and estimated to be over 1,000 years old, is an irreplaceable physical history of the Wiyot way of life. Contained within it are remnants of meals, tools, and ceremonies, as well as many burial sites.

At the end of the 19th century, settlers built dikes and channels on the island. These modifications changed tidal action along the shore, resulting in erosion of the edge of the mound. Between 1913 and 1985, an estimated 2000 cubic yards of the shell mound were lost to erosion, which continues and seems to even be accelerating. In addition, the shell mound was the site of uncontrolled digging in the early part of the 20th century. One amateur archaeologist was said to have looted as many as 500 of our gravesites. In addition, structures of the Tuluwat village that were still visible in 1913 are now gone, having been destroyed or carried away by wind and waves.

It is imperative to prevent further destruction of the mound. The planned restoration will eliminate continued erosion and looting while creating and enhancing wildlife habitat.


Eroding Midden site, 2000