Lake Haiyaha has a milky-blue tinge to it instead of the crystal clear waters 02:02. A popular hike in the iconic Rocky Mountain National Park is now even busier after a natural event caused Lake ...

Hikers explore Lake Haiyaha on July 27 in Rocky Mountain National Park. The lake’s water became a milky green after a rock slide on the south shoulder of Hallet Peak, seen in the background ...

Length: 4.6 miles round-trip Difficulty: Moderate Trailhead: Cub Lake (40.35620, -105.61597) Why we love it: Enjoy a buffet of Rocky Mountain highlights, including views of the wide-open glacial ...

Located in the Wild Basin area of Rocky Mountain National Park, Sandbeach Lake Trail is a moderate 4.5-mile hike that'll get the lungs pumping as soon as you set off from the parking lot at 8,302 ...

Why this alpine lake changed color at Rocky Mountain National Park Recent photos of Lake Haiyaha show the water has turned a milky green. To stream 9NEWS on your phone, you need the 9NEWS app.