Cache is a film canister with log only. BYOP.
Trail can be accessed from the south where it crosses 22 1/2 Ave. For a shorter hike, you can park on the shoulder of Cty. SS about 1/8 mile north of 23rd Ave. Cache is just off the trail. Depending on snow cover, it may be accessible in the winter.
The name of the cache refers to the fact that there is a great blue heron rookery to the west of the trail. In the spring, 12-15 nests are being used by these birds to raise their young. (Binoculars are a plus.) Also watch for them flying overhead as they bring food or return to roost in the evening. As summer approaches and the trees completely leaf out, the view will be blocked.
Permission to place this cache was given by the Northwest District Trails Coordinator of the Wisconsin DNR.