Close up of cross section from cut Ponderosa Pine tree, tree rings visible, near Blewett Pass, Okanogan-Wenatchee NF, Chelan County, Washington, USA

cutting aging process nobody part of cross section cracked pattern natural pattern shape geometric 2d shape concentric the americas north america usa us states washington full frame flora plant part tree ring tree trunk woody plant tree material wood lumber land woodland outdoors day environment environmental issues environment issues environmental conservation nature natural beauty okanogan wenatchee national forest blewett pass table mountain event fire damage environmental menagement aftermath ponderosa pine sawn timber felling time period ageing chelan county