Time and use have taken a toll on the tour routes that wind through the subterranean labyrinth of Mammoth Cave National Park. And so, not surprisingly, park officials say there's a need to rehab some of those routes.

Through November 9 park officials will be taking public comments on the environmental assessment that examines the work that needs to be done. You can find the EA at www.parkplanning.nps.gov/maca and even enter your comments at that website.

The EA assesses any environmental impacts that might occur in the course of this project, which calls for reconstruction of the trail surface, installation or replacement of steps, upgrade of safety rails,
installation of lint guards along the edges of the trails; and where necessary, installation of lights to provide a safe walking area. The project is intended to alleviate continuing safety concerns and address damage to the cave’s delicate natural and cultural resources, according to a park release.

If you want to submit written comments, you can send them to:

Mammoth Cave National Park, Attn: Superintendent,
P.O. Box 7, Mammoth Cave, KY 42259.

Comments should be sent by November 9, 2009 to be considered.

The fine print: Comments are typically treated as a public record and made available for public review. Individuals may request that the National Park Service withhold their name and address from disclosure. Such requests will be honored to the extent allowable by law.