Munden sailed to Fisher's Valley at the east of the island, where a stream ran to Prosperous Bay from Diana's Peak. The stream fell down a high vertical rockface close to the shore. One of Beale's slaves, Black Oliver, knew a route up this cliff face and on 4 May, he and a party of Munden's men, led by Assistance lieutenant Richard Keigwin, were landed here after dark. One of Keigwin's men, named Tom, was the first to climb, carrying a rope that was used to haul up the rest of the party. The following men's shouts of "hold fast, Tom!" led to this location's modern name of Hold Fast Tom. The location would have been unassailable if defended by the Dutch but they had no men to spare for its defence. Keigwin's party now had access to high land which overlooked the interior of the fort and would render it indefensible.
