Much of Puget Sound is nothing but Pleistocene - with Vashon glacial deposits on the surface and older glacial and interglacial sediments peaking out from the lower portions of some of the bluffs. But at Rocky Point, on the west side of Whidbey Island, and in Skagit Bay, the Mesozoic re-emerges from the basement to form rocky islands and headlands.
Hamlin Park (Wikipedia)Hamlin Park is an 80-acre public park in Shoreline, Washington. The park includes a wooded area with trails, a softball/baseball field with bleachers, two playgrounds, and a picnic shelter. An orienteering course with waypoint markers is laid out within the park.