Last updated: January 21, 2021
Pleistocene Ice Age glaciers advanced across this valley many times. Each time the glaciers melted, a raging torrent of meltwater flowed across the valley floor. The powerful flow carved terraces that step down to the modern Snake River. Today, conifer and cottonwood trees line the river. Across the valley, the highest peaks of the Teton Range rise abruptly from the valley floor. The Middle Teton lies south of the Grand Teton-the tallest peak in the range. Mount Owen and Teewinot Mountain lie to the north.