. ▁Pot tery ▁found ▁here ▁is ▁of ▁the ▁gro oved ▁w are ▁style ▁which ▁was ▁found ▁at ▁the ▁Stand ing ▁St ones ▁of ▁St enn ess , ▁close ▁to ▁the ▁exception al ▁Ma es how e ▁passage ▁grave ▁type ▁chamber ed ▁c air n ▁of ▁about ▁the ▁same ▁period . ▁ ▁The ▁nearby ▁Ring ▁of ▁Bro d gar ▁circle ▁of ▁standing ▁stones ▁was ▁one ▁of ▁the ▁first ▁to ▁be ▁anal ys ed ▁by ▁Professor ▁Alexander ▁Thom ▁to ▁establish ▁the ▁likely ▁use ▁of ▁standing ▁stones ▁as ▁astronom ical ▁observ ator ies . ▁Another ▁Ne ol ith ic ▁village ▁has ▁been ▁found ▁in ▁the ▁vic inity ▁at ▁Bar n house ▁S ett lement . ▁ ▁The ▁bro chs ▁of ▁Or k ney ▁occur ▁on ▁several ▁islands . ▁Many ▁of ▁these ▁structures , ▁such ▁as ▁B urr ough ston ▁Bro ch ▁on ▁Sh ap ins ay , ▁are ▁isolated ▁fort ified ▁houses . ▁O thers , ▁such ▁as ▁the ▁Bro ch ▁of ▁G urn ess , ▁are ▁surrounded ▁by ▁numerous ▁other ▁dwell ings ▁and ▁anc ill ary ▁structures . ▁ ▁In ▁many ▁cases ▁the ▁bro chs ▁also ▁are ▁surrounded ▁by ▁elaborate ▁d itch ▁and ▁r amp art ▁def ences . ▁ ▁Both ▁B urr ough ston ▁Bro ch ▁and ▁the ▁Bro ch ▁of ▁G urn ess ▁have ▁interesting ▁guard ▁ch amb ers ▁within ▁their ▁thick ▁dry stone ▁walls ▁to ▁monitor ▁the ▁single ▁entrance ▁pass ages . ▁ ▁Iron ▁Age ▁The ▁Iron ▁Age ▁brought ▁impress ive ▁" Bro chs " ▁or ▁round ▁to wers , ▁and ▁"