The Grand Canyon may be the largest canyon in the U.S., ... For example, a new species of macaque was discovered, and 16 different species of ungulates (large hooved mammals) ...

13 Hikers Needed to be Rescued in the Grand Canyon in One Week. Here’s Why. Search and rescue teams recently conducted 13 helicopter rescues over a seven-day span.

There have been 11 deaths at Grand Canyon National Park so far this year. We asked hiking experts to share their best recommendations to avoid danger. By Derrick Bryson Taylor The Grand Canyon ...