I think you'll see why it's called Rockville.
There is slight elevation change. You can take a trail part of the way to the cache. Once you are off the trail, watch your step. There is some brush. It is a short walk but probably too difficult for toddlers.
Until recently, most of this park was used as pasture. There is a walk-in canoe access. In the winter, a snowmobile trail runs along the other side of the road.
Please use one of the recommended parking areas. Parking closer to the cache is not safe.
Park hours are 7 a.m. to 10 p.m.