More than 270 miles (435 km) long and averaging 10 miles in width, the Grand Canyon reaches depths of 5700 ft and passes through five of the seven temperate zones at which different species flourish. Bright Angel and Kaibab Trails Two maintained trails – Bright Angle and Kaibab descend into the canyon. A supply of water is essential for venturing out on either one, as temperatures routinely exceed 37 degree Celsius at the bottom. Indian Gardens Get up early if you plan an all-day hike to Indian Gardens – a verdant oasis 4 ½ miles and 3100 ft below the rim. Colorado River Most people are content with day hikes,…