Srah castle tower upper half with decrepit walls as birds fly to their home

srah castle tower upper half decrepit walls birds ireland fly their home srah castle grand canal way tullamore bullaun stone crofton hall base batter bartizan machicolation gun loop aerial drone delicate old iconic offaly ancient ruin history landmark monument religion stone citadel culture daytime path farmland green barren empty cracks spread fissure tendrils drop perch flock