Mount Katmai is a large volcano on the Alaska Peninsula located within Katmai National Park and Preserve. Mount Katmai erupted on June 6, 1912, emitted ash and pyroclastic flows for over 60 hours, and formed a new volcano called Novarupta. Pyroclastic ash from the eruption flowed down the north side of Mt. Katmai forming the Valley of Ten Thousand Smokes. The valley was named by botanist Robert F. Griggs who explored the area for the National Geographic Society in 1916. Ash also flowed down the Katmai River valley and into Katmai Bay on the south side of the mountain. The area surrounding Mt. Katmai was originally designated a National Monument in 1918 to protect the Valley of Ten Thousand Smokes. Three coastal villages at Katmai Bay, Kukak Bay, and Kaguyak Bay existed prior to the eruption. Katmai Bay Village was the only location where European missionaries lived. During the eruption, ash fell 6 to 12 inches (15 to 30 cm) deep in Kodiak, and on the Alaskan mainland. Pumice can still be found on the beach and floating in Katmai Bay. All three villages were permanently abandoned during or shortly before the eruption. Villagers from the Katmai coast moved south to start a new settlement at Perryville. Read more about Mt. Katmai here and here. Click here to download CoastView and explore more of Katmai Bay and the coast of Katmai National Park and Preserve.