▁rich ▁grass land , ▁scr ub ▁and ▁m ature ▁h ed ger ows . ▁Three ▁fields ▁are ▁designated ▁as ▁Bur ledge ▁S idel ands ▁and ▁M ead ows ▁a ▁Site ▁of ▁Nature ▁Conserv ation ▁Interest ▁( SN CI ), ▁and , ▁since ▁November ▁ 2 0 0 5 , ▁as ▁a ▁Site ▁of ▁Special ▁Scient ific ▁Interest ▁( SS SI ) ▁covering ▁ 4 8 . 7 ▁ha . ▁ ▁Bur ledge ▁hill fort ▁is ▁a ▁un iv all ate ▁Iron ▁Age ▁hill fort . ▁The ▁site ▁was ▁investig ated ▁three ▁times : ▁in ▁ 1 9 5 5 ▁by ▁the ▁University ▁of ▁Br istol ▁Sp ela e ological ▁Society ▁and ▁in ▁ 1 9 5 9 ▁and ▁ 1 9 6 6 ▁by ▁field ▁investigation . ▁In ▁ 1 9 5 5 , ▁the ▁exc av ating ▁arch ae olog ists ▁found ▁evidence ▁of ▁post ▁or ▁st ake ▁holes , ▁d itch es , ▁p its , ▁and ▁g ul lies ▁inside ▁the ▁fort . ▁They ▁also ▁found ▁artifact s ▁like ▁a ▁part ▁of ▁an ▁iron ▁fib ula , ▁animal ▁b ones , ▁and ▁pot tery . ▁One ▁find ▁which ▁ev iden ced ▁that ▁metal working ▁was ▁done ▁at ▁this ▁site ▁was ▁the ▁discovery ▁of ▁iron ▁sl ag . ▁ ▁Dem ograph ics ▁ ▁According ▁to ▁the ▁ 2 0 0 1 ▁census , ▁the ▁Che w ▁Valley ▁South ▁Ward ▁( which ▁includes ▁Bishop ▁S utton ▁and ▁St ow ey ) ▁had ▁ 1 , 2 2 2 ▁residents , ▁living ▁in