the Dutch Harbor airport as it spread across many miles of the North Pacific. Okmok Caldera itself had been formed and reshaped in two major eruptions which occurred 12,000 and 2,000 years ago. Direct observations of later volcanic activity are known since 1805, with 16 eruptions recorded every 10 to 20 years. The 1817 eruption deposited several feet of ash and "scoria" rock debris on the northeastern caldera rim, with ash falling on Unalaska Island. Floods that occurred during this destroyed an Aleut village at Cape Tanak on the northeast Bering Sea Coast of the island. In the recent 1997 eruption, the ash clouds traveled across the volcano's caldera floor. Demographics In 1941, when the island was being used as a military base by the United States, the population of the province consisted of only 50 Aleutians. , the island's population further declined to 39 persons. Its only remaining community, Nikolski, comprised the island's entire population. Fort Glenn, a former major military facility on the northeast shore of the island, played an instrumental role in the North Pacific Theater in World War II. , there were 15 households and 12 families residing on the island. The population density was . There were 28 housing units at an average density of . The racial makeup of was 30.77% White and 69.23% Native American. There were 15 households, out of which 40.0% had children under the age of 18 living with them, 53.3% were married couples living together, 20.0% had a female householder with no husband present, and 20.0% were non-families. 20.0% of all households were made up of individuals, and none had someone living alone who was 65 years of age or older. The average household size was 2.60 and the average family size was 2.92. In 2000, the median age was 40 years, with 35.9% under the age of 18, 30.8% from 25 to 44, 23.1% from 45 to 64, and 10.3% who were 65 years of age or older. For every 100 females there were 105.3 males. For every 100 females of age 18 and over, there were 92.3 males. The median income for a household was $38,750, and the median income for a family was $40,250. Males had a median income of $26,250 versus $11,875 for females. The per capita income was $14,083. There were 23.5% of families and 20.7% of the population living below the poverty line,