Mount Shishaldin

Ash clouds from two volcanoes have disrupted air travel in the Aleutians, including Unalaska, preventing some patients from reaching medical care in Anchorage.

A volcanic eruption on Unimak Island has triggered an air quality advisory in Unalaska, the first time Unalaska has been affected by Mount Shishaldin’s summertime eruptions.

From mid-June to mid-October, Dan Binde of Minnesota hiked from Yakutat, in the northern reaches of Alaska's Inside Passage, across the Alaska Peninsula,…