At the Polledrara deposit outside the city, more than 9,000 fossil remains have been unearthed, representing a diversity of animals: ancient elephants, buffalo, deer, Barbary apes, rhinoceroses, and aurochs ​ — large oxen that were driven to extinction about four centuries ago.
Linna lähedalt Polledrara lasundist on leitud üle 9000 fossiilse jäänuse väga erinevatest loomadest: ürgelevantidest, piisonitest, hirvedest, magotitest, ninasarvikutest ja tarvastest (umbes neli sajandit tagasi lõplikult hävitatud hiiglaslikud veised).