Welcome to Bicycling Boundary for Bisons! (I was going to call this series "Central Park: the Saga continues" but thought that I have enough caches in Central Park so onward to Boundary!)
This is a series of bison tubes hidden along a little known quiet road just to the east of Boundary Road. The wall along Boundary Road was constructed to keep the noise levels down for the residential area. The wall has many plantings of trees and shrubs along the way which has aided me in hiding the bison tubes. The small road you will be going along is actually called Boundary Road as well so I hope you don't get confused! It is completely separated from the main road with the wall.
The series of containers is intended to be found by bicycle (that is how we hid them and had a lot of fun doing so!) but you may of course find them any way you like. There are access points along the main thoroughfare of Boundary Road to get through to the road and there are also bus stops along the way. If you are driving, I would suggest that you start from the south and work your way north as the small road is one way going from south to north.
Bicycling Boundary for Bisons #6:
Hmmm...where could a bison tube hide?...