You can access Meridian Mountain if you purchase a Weyerhaeuser permit https://recreation.weyerhaeuser.com. You will need the “Longview – St Helens” one. The permit is valid for a year and gets you a map that you can load into an app on your phone as well as a key to the Recreation Access Gates. Take I5 N to exit 42, then Ostrander Road to Rec Permit Access Gate 010.
Goble Mountain is one of several two-point summits accessible from Weyerhaeuser rec permit access gate 6110. For permit information see: https://recreation.weyerhaeuser.com. You will need the “Longview – St Helens” one. For this three-summit “expedition” I drove to within a few miles of each summit, parked and mountain biked to each of the summits.
Nineteen Mountain is one of several two-point summits accessible from Weyerhaeuser rec permit access gate 6110. For permit information see: https://recreation.weyerhaeuser.com.
Smith Mountain is one of several two-point summits accessible from Weyerhaeuser rec permit access gate 6110. For permit information see: https://recreation.weyerhaeuser.com.
There are several trip reports available for Rock Peak, WA. I used: https://www.summitpost.org/rock-peak/709367 which had correct directions. It is also accurate about the hike up being a short, steep, slippery ascent with medium density forest floor brush. Peakbagger has several other reports (https://www.peakbagger.com/peak.aspx?pid=16430)
2023 update: You can access North Green Mountain if you purchase a Weyerhaeuser permit https://recreation.weyerhaeuser.com. You will need the “Longview – St Helens” one.
You can access Wilkes Hills if you purchase a Weyerhaeuser permit https://recreation.weyerhaeuser.com. You will need the “Longview – St Helens” one. There is no rec permit access gate from the I5/Burma Road side. You have to go around to the East side a bit. It is about 8 miles from the intesection of Tower Road and Hwy 504.
Signal Peak is a 12.7 mile Priusable drive up with some pot holes that are easily navigated. It does not need a Weyerhaeuser permit for access. Although you traverse through Weyerhaeuser land, the road you take is designed as a “Public Access Corridor” to the state forest where the Signal Peak summit is located.
You can access Elk Rock if you purchase a Weyerhaeuser permit https://recreation.weyerhaeuser.com. You will need the “Longview – St Helens” one. If you purchased the non-motorized permit, you can follow the trail described in a previous summit report (https://www.alltrails.com/explore/recording/elk-rock).
3020 (Receiver Mountain) is a summit for the persistent activator – you will find it has both good and challenging aspects. The approach roads require 4WD and most sections are in good shape but foliage in some sections of the road encroach and could scratch your vehicle.