A hiker had a frightening encounter with a mountain lion on the Gridley Trail, a trail near Ojai, California. Watch here.

Grand Canyon National Park announced a hiker fatality on the South Kaibab Trail. Park officials infer a heat-related illness was to blame.

When sheep chase a hiker/outdoor influencer and his cat down a mountain, hilarity ensues. Watch the video here.

A backpacker summits a mountain only to watch as her pack bounces down the mountain she just climbed. Oof. Watch here.

Two women are teaming up to educate the public about dangers of hiking and recreating outdoors, particularly during the summer months.

A family ignored trail closures to hike a trail in Arizona, and they needed rescue after several children began to suffer from heat illness.

A teen hiking Mt. Whitney hallucinated due to altitude sickness and walked off a cliff. The teen is now showing signs of improvement.

The search for missing hiker Monica Reza is ongoing after six days. Reza disappeared while hiking outside of Los Angeles, California.

This mountain runner and hiker has climbed dozens of 14ers in high heels. Why? Because she wants to, and unlike most people, she can.

A father-daughter hike on Mount Katahdin became a double tragedy when both hikers died due to to “treacherous” weather conditions.