Beacon Rock State Park is a huge chunk of rock situated next to the Columbia River along the border between Washington and Oregon. Apparently this 848-foot chunk of basalt was once the core of a volcano. There is a very popular and short 1-mile hiking trail that brings you all the way up the rock via a series of well-maintained switchback bridges and trails.
I was up in less than half an hour. Unfortunately, because this is such an easy and popular hike, it was very crowded at the top.
Here are some pictures from the hike: