The end is nigh at Armageddon - at least for an old Israeli prison near the ancient ruins of Megiddo, by tradition the site of the apocalyptic Biblical battle between good and evil.Half an hour's drive south of Nazareth, Armageddon is a popular site for the coach loads of tourists visiting the sites of the Holy Land. There is also a busy program of excavations. In 2005, work to expand the ageing Megiddo Prison uncovered the remains of a 3rd century Christian prayer hall, including a mosaic referring to "God Jesus Christ"."When the Christian prayer hall was first found beneath the prison, we were all excited for one minute," said Matthew Adams, director of the W.F. Albright Institute of Archaeological Research in Jerusalem, who has spent years excavating Megiddo."And then we realized, 'Oh, it's in a maximum security prison, so we'll never actually be able to do anything with it'."The building with the mosaic was excavated, earlier artifacts found, and the site was covered up under the supervision of archaeologists.Now, after years of legal and bureaucratic delays, the prison is to be relocated, freeing up the site for further exploration potentially as early as 2021.The prospect already has archaeologists excitedly talking about an area they have started to call "Greater Megiddo"."Now that the government has decided to move this prison, we can explore this really amazing and interesting part of the development of early Christianity in a way that we didn't think we'd be able to," Adams said.The prison, whose inmates once included Hamas and Islamic Jihad militants, lies a few hundred yards south of Tel Megiddo itself, the ancient mound at which archaeologists have found walls dating back at least 7,000 years.Between the prison and the hill is the largely unexcavated Roman Sixth Legion garrison, thought to have been built by the Emperor Hadrian.The name Armageddon is believed to be a corruption of the Hebrew words Har Megiddo - Mount Megiddo.Although small, the hill was the site of numerous ancient battles because it overlooks the Jezreel Valley, across which armies have marched since antiquity towards a pass leading to the Mediterranean.