{"version":"1.0","type":"link","title":"Shell keep - Newikis","description":"A shell keep is a form of medieval fortification, best described as a stone structure encircling the top of a motte.","provider_name":"Newikis","provider_url":"https://newikis.com","cache_age":86400,"thumbnail_url":"https://thumb.wikimedia.org/wikipedia/commons/thumb/8/89/Cardiff_Castle_keep_2018.jpg/1280px-Cardiff_Castle_keep_2018.jpg","thumbnail_width":1280,"thumbnail_height":1280}