Black Diamond Hill - King County Highpoints

Black Diamond Hill is a prominent highpoint in East King County, just east of the small town of Black Diamond. At this time, this access is posted Private Property. According to King County records, it is owned by the Weyerhaeuser Real Estate Division. In 2012, signs were up selling the property, so who knows what the future holds.

Black Diamond Hill

From Black Diamond, turn east on Lawson Street which becomes SE Green River Gorge Road. Follow it NE, then E, then SE. Look for the second gate on the right, just before crossing a small bridge. If you hit 290th Ave SE, turn back. Park in the turnouts on the north side of the highway a bit east of the gate.

Route:

Hike the road behind the gate as it slowly climbs southeast. After a few stream crossings, the road eventually reaches a minor saddle. Here is a 4 way intersection. Take the first right, on the least used road of the four. This road switchbacks climbing slowly but eventually reaching the saddle between the two summits. At that Y, go left for the summit with a view, the eastern summit. The right summit didn't seem higher and it certainly has nothing to offer. The highest spot was just inside the woods from the summit landing, on an ATV trail that drops down the other side of the mountain.