After 10 days of searching for a hiker thought to be missing in either Kings Canyon National Park or the adjacent Inyo National Forest in California, authorities said Thursday they would scale back the effort.

The last big holiday weekend in the National Park System likely will be a busy one in many parks. Staff at Zion, Acadia, and Sequoia/Kings Canyon national parks are saying crowds can be expected in their parks this coming weekend.

A mile-long section of underground trail at Mammoth Cave National Park in Kentucky will be rehabilitated thanks to a $6.5 million infusion of Great America Outdoors Act funds.

Grand Canyon National Park biologists have received confirmation that a bat collected along the Colorado River in mid-August has tested positive for rabies. Wildlife managers generally report an increase in human-bat interactions in summer months. Individuals who have had physical contact with a bat are advised to seek medical attention and be assessed for appropriate medical treatment.