Tatoosh Island is located at the extreme northwest corner of the Olympic Peninsula at the mouth of the Strait of Juan de Fuca. The island has been inhabited seasonally by the Makah people for centuries. In 1855, the US Coast Guard built Cape Flattery Lighthouse to signal the south entrance to the Salish Sea. Greg Coons of SSF Structural Engineers & Jim Cary of Cardinal Architecture reviewed the lighthouse and the adjacent Fog Signal Building. We flew to the island in a US Coast Guard helicopter & spent a day documenting & evaluating the historic structures. Along with representatives of the Makah Tribe & the US Coast Guard, we studied existing conditions & studied the pre-civil war era lighthouse construction methods. We developed a plan for stabilizing & restoring the lighthouse & fog signal building.