A Whitewater Township 631.8-ha provincially significant Earth Science ANSI.
Pretty's Hill ANSI contains the best representation of Late Wisconsinan, North Bay Interstadial, Champlain Sea related features. At least 5 sea levels are recorded as beaches or wave cut terraces. At the base of the hill, a well developed marine sand spit is preserved. Marine shells were found. [Earth Science Database, 1998]