Talbot Bay is the site of the Horizontal Waterfalls, which lie about 20 miles to the east of Cockatoo Island in the Buccaneer Archipelago. The effect of the waterfalls is created by the rapid tidal fall on the ocean-side of gaps in the sandstone cliffs. Waters on the inland side of the gaps cannot escape fast enough and so a ‘’horizontal waterfall’’ is created by the cascades, with water levels differing sometimes by several meters on either side of the gaps. The gaps themselves were once layers of siltstone in the strata of the sedimentary rock. It is through these gaps that tide movements push sea water to create the Horizontal Waterfalls.