By the early 19th century settlements in both New South Wales and Tasmania had expanded dramatically. Settlers from both regions were worried that they were running out of grazing land. In 1824, the explorers Hamilton Hume and William Hovell led an expedition from New South Wales to Corio Bay in Victoria (present-day Geelong). They crossed a large river, where Albury now stands, and named it the Hume River. It was later renamed the Murray River. Hume and Hovell would begin a bitter rivalry (most