Thiells sits in the shadow of the Ramapo hills, where Rockland County roads climb and dip between Harriman's tree line and the flats out toward Lake DeForest. Monteverde Landscaping keeps yards there in shape through the growing months — mowing, trimming, bed edging, hedge work and cleanups — then turns to the plow when the hills go white. Storms tend to hang up on that high ground, dropping more on Thiells than the forecast ever promised the river towns below. Clearing a driveway ahead of the school buses, wide and square to the garage door, is worth doing right. Neighbors in Garnerville, West Haverstraw, Pomona and Stony Point are on the same list.