 On 30 August 1903, while working with his brother in the geothermal region of the area, Joe Warbrick was killed.The Waimangu Geyserthen the largest geyser in the worldunexpectedly erupted with Joe Warbrick and several tourists in the vicinity; four of them, including Warbrick, were killed instantly by the superheated water ejected during the eruption before they were swept towards Lake Rotomahana.Joe Warbrick had warned one of the tourists not to venture too close to the geyser; however, she insisted on moving closer to get a better photograph.