 Access to the rest of the city can be made from Adelaide Avenue, Commonwealth Avenue, Lady Denman Drive and Cotter Road, all of which run along the borders of the suburb.From these roads, entry to the suburb can be gained by turning into roads such as Coronation Drive, Hopetoun Circuit and Novar Street.Yarralumla is located on the Yarralumla Formation which is a mudstone/siltstone formation that was formed around 425 million years ago during the Silurian Period.