Up on the Petersburgh hillsides the old stone walls still run through the trees, marking out pasture that went back to woods generations ago, and the lawns that remain are carved from that same stubborn ground. Burnell And Sons Landscaping & Tree Removal mows and trims those properties where the slope wants to slide the machine and the grass grows thick with mountain rain. Summer here can drop a thunderstorm over the Taconic ridge in twenty minutes and leave the whole valley steaming afterward, which makes the timing of a route half the skill. Cleanups come in spring and again when the hardwoods let go in a rush of color. A yard cut level and edged tight against fieldstone is a small, good thing on a big hillside.