In the final decade of the 8th century AD, Norse raiders attacked a series of Christian monasteries located in the British Isles. In the British Isles, Christian monasteries had often been positioned on small islands and in other remote coastal areas so that the monks could dwell there in seclusion, devoting themselves to worship without the interference of other elements of society. At the same time, it made them isolated and un-protected targets for attack.[15] Historian Peter Hunter Blair remarked that the Viking raiders would have been astonished "at finding so many communities which housed considerable wealth and whose inhabitants carried no arms."[15] These raids would have been the first contact many Norsemen had with Christianity, but such attacks were not specifically anti-Christian in nature, rather the monasteries were simply seen as 'easy targets' for raiders.