I experienced this trail in the spring and again in the fall and was impressed with the beauty, variety and hiking challenges all packed into less than a two hour, 5 kilometer long loop. Boundary Bluffs Loop is described in the BTC Reference Hike Guide 28 (pg 36-2) as strenuous with glorious views from the bottom and top of the escarpment. Now that should alert you that it is not just a walk on the edge of field, but also a great work out which of course rewards the hiker wi