The Dundas Valley was initially carved into the Niagara Escarpment by a preglacial river, but was later widened band depended by intense ice scouring to create the present broad U-shapped form characteristic of glaciated valleys. Deepening was so extensive that in the lower reach of the valley the bedrock surface now lies in excess of 100 meters below the level of Lake Ontario. Vast glacial till, meltwater and lake deposits now deeply cover the area and completely bury the Escarpment rocks in the upper portions of the valley.

650 Governors Road, Dundas, ON, Canada

The Dundas Town Hall. Dundas was incorporated as a town in 1847 by a special Act of the legislature of the Province of Canada. The following year the town council accepted a tender from a local builder, James Scott, to erect a stone town hall and voted £2000 to cover the cost. Designed in a version of Roman Classic, by Francis Hawkins of Dundas, the building was completed by July, 1849, and was said to have cost £2500. Except for a small Italianate wing added later, the exterior has been little altered, although a thorough renovation was carried out in 1946. It is one of the most handsome, pre-1850, municipal buildings surviving in Ontario.

60 Main Street, Dundas, ON, Canada

“Dundas Mills”. By 1799 the Morden family had a sawmill near this site on Spencer Creek north of Dundas Street. They sold this property in 1800 to Edward Peer who built a grist-mill about 300 yards south-east, close to Dundas Street, and adopted the name "Dundas Mills". Peer sold the property in 1804 to Richard and Samuel Hatt and a partner, but by 1807 Richard had become sole owner. Then or slightly earlier, Richard Hatt built north-west of Peer's grist-mill the tall, stone flour mill which stood near this site until 1968. The other mills were destroyed long before. The community of "Dundas Mills" became part of the town of Dundas in 1847.

Corner of Ogilvie Street and Governors Road, Dundas, ON, Canada