I walk this route regularly to get to the library in White Marsh. Lots of interesting homes and other sights along this road. I went out this morning and made some hides. These are not park and grabs; they require a short walk to GZ, or you can walk the route as I did. Do not park or stop on Silver Spring Road.
You are seeking a bison tube. Vehicle muggle activity will be heavy at times, so use stealth. Parking on a nearby street. Log only, BYOP
Congratulations to unusualsuspect for FTF.