During Darwin's lifetime, many geographical features were given his name. An expanse of water adjoining the Beagle Channel was named "Darwin Sound" by Robert FitzRoy after Darwin's prompt action, along with two or three of the men, saved them from being marooned on a nearby shore when a collapsing glacier caused a large wave that would have swept away their boats, and the nearby Mount Darwin in the Andes was named in celebration of Darwin's 25th birthday. When the "Beagle" was surveying Australia in 1839, Darwin's friend John Lort Stokes sighted a natural harbour which the ship's captain Wickham named "Port Darwin": a nearby settlement was renamed Darwin in 1911, and it became the capital city of Australia's Northern Territory.