a group of german an irish archaeologists have met up at the old church at screen a fifteenth century sites. in mysticism but the church ruin is almost young compared to the an ancient monuments that dot the surrounding area. northwest of dublin the hill of screen is located opposite island s cultural treasure the hill of tara a millennia old place of assembly. the region is also home to giant megalithic tombs unique monuments built around three thousand b.c. by people who left nothing behind but their graves. a digital reconstruction lens an impression of the graves interiors many built in alignment with astronomical events.