The date of these eruptions is fixed by the investigations of the early 19th century explorer William Cornwallis Harris, whom David Buxton states first encountered this volcano and its lava beds in 1842.
He quotes William Cornwallis Harris' description of an annual bazaar that started each September, when "for two months the beach is piled with merchandise, and the suburbs are crowded with camels, mules and donkeys."
William Cornwallis Harris (1807–1848), English military engineer, artist and hunter
From 1841 to 1843, Harris led a British diplomatic mission from Bombay to Sahle Selassie, Negus of Shewa, at the time an autonomous district of Ethiopia, with whom they negotiated a commercial treaty.
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