#OnThisDay 11 May 1813 Gregory Blaxland, William Lawson and William Wentworth departed Sydney on an expedition to find a route over the Blue Mountains. The trio reached Mt York on 28 May and arrived at Mt Blaxland three days later. At this point they turned back to Sydney having sighted the plains beyond and found a passage over the Blue Mountains.
Related
Digitised entries in the Colonial Secretary's Papers under Exploration
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