ENPO121221_D014 Published December 22, 2012 at 1430 × 894 in Frosty Morning Walk Frost-covered wetland plants stick out from the ice on a frigid but pleasant winter morning. The Nature Conservancy’s Platte River Prairies, Nebraska. An icy morning at the Derr Sandpit Wetland Restoration. The Nature Conservancy’s Platte River Prairies, Nebraska.