Possibly still a homeless encampment, check on-site.

Survey needed: heavily overgrown road leading from somewhere about here to the ruined Elijah O'Flyng Battery.

SEO vandalism deleted building outline in two changeset versions

overlapping highway here. However what's being drawn here, geometries here does not seem to match imagery?

This area is at the end of a gravel track, known locally as Water Mark Road or Owl Creek Road. Follow Upper Hoh Road east from Hwy 101, around 8 miles, and the road will split at a Y. Take the gravel road to the right, drive to the end, and you'll find a sign posted on a tree saying that camping is allowed in designated areas. As far as I could tell, the only designated areas were down a rough track to the left. Access for RVs would be very difficult. (OSM data version: 2016-07-15T17:38:02Z) #mapsme

Is there a gym there?

Aerial Imagery shows roads here that aren't mapped, and roads mapped which aren't here. Which is correct?

Is there a bridge for pedestrians there?

Is there access to Bush Park here, at corner of Leffelle and Winter?
(there is a possible indication of a pedestrian crossing with tactile paving on either side of Leffelle just South of here)