By the third week of October the oaks above these lanes let go nearly all at once, and the narrow roads around the lakes go gold underfoot. High Class Tree Service LLC works the lawns through it — the last cuts of the season, leaves gathered off the turf before they mat down and smother it, edges tightened where the gravel shoulders creep in. Rainbow Lakes sits high enough that frost arrives a week ahead of the valley towns, so the calendar here runs on its own clock. There is a satisfaction in the after: a lawn combed clean, hauled bare, breathing again before the cold sets. Come April the same yards get the reverse treatment, and the year turns over.