The 11-acre (4.5 ha) property, containing an old-growth forest, is located on the south side of Interstate 84 at approximately milepoint 42.5,[2] and was not accessible by motor vehicle since I-84 was built in 1960.

However, with the opening of the Eagle Creek-Cascade Locks segment of the Historic Columbia River Highway State Trail in 1998, it has become easily accessible by foot or bicycle.

It served as a wayside on US 30 - the Historic Columbia River Highway - until 1960, when the new I-84 freeway replaced the old road, cutting off access except through the national forest.

[4] Just to the east of the park, within the national forest the trail passes under I-84 in a 150-foot (50 m) long precast concrete rock-faced tunnel (45°39′00″N 121°54′39″W / 45.6501°N 121.9107°W / 45.6501; -121.9107).

The $500,000 structure was built as part of the restoration project, and was required to connect the park to another intact piece of road, located north of I-84 at the west Cascade Locks interchange.