Associated Press - June 21, 2009 11:35 AM ET

PONCA, Neb. (AP) - A northeast Nebraska park is preparing to open its latest attraction.

Ponca State Park and Recreation Area expects to begin taking reservations this summer for its two "green" cabins.

The energy-efficient units are made almost completely out of recycled materials. They feature geothermal heating and cooling and straw bale insulation.

Signs throughout the cabins also offer visitors a chance to learn about the importance of energy efficiency.

Partners of the Green Cabin Project include the Nebraska Game and Parks Commission, Nebraska Environmental Trust Fund, Nebraska Public Power District, AAA Nebraska, the Cornhusker Motor Club Foundation and the Nebraska Department of Environmental Quality.

On the Net:

Nebraska Game and Parks Commission, http://www.ngpc.state.ne.us/

Information from: KNEB-AM, http://www.kneb.com

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