Crater Lake is a caldera lake in southern Oregon. The lake is famous for its deep blue color and clear water and fills a 2,148 foot deep crater that was formed about 7,700 years ago by the collapse of Mount Mazama, a volcano. Crater Lake is the deepest lake in the United States.

From the Northwest Historical Postcards Collection. We’ll be featuring vintage postcards from the Northwest all summer, so stay tuned for travel recommendations.