Macaj was hiking Longs Peak in Boulder County on Sunday and last checked in with a friend when he reached the summit around 1 p.m. before dangerous storms moved in and Macaj failed to check in again.

Longs Peak, at 14,259 ft, pokes well above much of the landscape ... The tall steep rock cliff leading to the sunlit summit – called The Diamond -- is the site of some of the more famous rock-climbing ...

Depending on the weather and the season, past hikers claim ice axes and crampons (ice spikes) could be essential to summit the peak. Parking for the Longs Peak Trailhead is available off of state ...