▁a ▁cave ▁in ▁the ▁British ▁O verse as ▁Territ ory ▁of ▁Gib ral tar . ▁ ▁Location ▁ ▁It ▁is ▁below ▁Middle ▁Hill ▁on ▁the ▁Upper ▁Rock , ▁at ▁the ▁site ▁of ▁an ▁Is olation ▁Hospital ▁by ▁Governor ' s ▁Look out . ▁ ▁Geography ▁Gib ral tar ▁is ▁sometimes ▁referred ▁to ▁as ▁the ▁" H ill ▁of ▁C aves " ▁and ▁the ▁ge ological ▁formation ▁of ▁all ▁the ▁c aves ▁is ▁lim estone . ▁The ▁P oca ▁R oca ▁C ave ▁f iss ure ▁runs ▁through ▁the ▁Rock ▁of ▁Gib ral tar ▁in ▁a ▁general ▁west – east ▁direction ▁all ▁the ▁way ▁from ▁Bell ▁Lane ▁in ▁the ▁old ▁town ▁area ▁to ▁Catal an ▁Bay ▁on ▁the ▁coast . ▁ ▁History ▁During ▁the ▁three - and - a - half - year - long ▁Great ▁Sie ge ▁of ▁Gib ral tar ▁the ▁population ▁of ▁the ▁Rock ▁made ▁use ▁of ▁the ▁c aves ▁to ▁shelter ▁from ▁the ▁bomb ard ment . ▁Be ef ste ak ▁C ave ▁was ▁used ▁by ▁Gib ral t ari ans ▁whilst ▁P oca ▁R oca ▁cave ▁was ▁prepared ▁in ▁August ▁ 1 7 7 9 ▁for ▁use ▁as ▁apart ments ▁by ▁General ▁George ▁August us ▁Elli ot ▁( after wards ▁Lord ▁He ath field ▁of ▁Gib ral tar ▁the ▁Governor ▁of ▁Gib ral tar . ▁This ▁cave ▁was ▁later ▁used ▁as ▁a ▁storage ▁area ▁for ▁gun pow der ▁( to ▁serve ▁the ▁art illery ▁batter ies ▁on ▁the ▁height s ) ▁after ▁the ▁sie ge ▁had ▁been ▁abandoned ▁in