[2] The 12- to 13-acre (4.9- to 5.3-ha) island, formed 40 million years ago by a volcano, was given to Portland by Peter Kerr in 1940.

[3][4][5] The city of Milwaukie took ownership of the park in April 2016.

[6] The island is accessible via Spring Park.

[7][8] It is one of the last stands of the Oregon White Oak.

This Clackamas County, Oregon state location article is a stub.