In January 1803, Charles Grimes, the deputy surveyor-general of New South Wales, was sent to Port Phillip to survey the area. Sailing on the schooner "Cumberland", under the command of Acting Lieutenant Charles Robbins, the party entered Port Phillip on 20 January 1803. Grimes explored the Yarra by boat for several miles until he reached Dights Falls on 8 February. The event is commemorated by a historic marker on a ridge above the falls to the east: "first white men to discover the river Yarra reaching Yarra Falls on 8th February, 1803. Also to make the first crossing near here with the cattle by the first overlanders John Gardiner, Joseph Hawdon and Captain John Hepburn in December 1836".