The [Big Rock] erratic lies in what is said to be the smallest King County park, 20 by 70 feet (6.1 m × 21.3 m) in extent, that barely contains the rock and sequoias.
https://github.com/davepinch/pinchy.cc/blob/master/content/topics/places/glacial-erratics/erratics/big-rock-duvall/big-rock-duvall.md
The [Big] rock, and two non-native sequoias adjacent to it probably planted by area pioneers, are a local landmark.