Assertion: castle's fortification | /r/CapableOf | conceal ditch
Facets:
value: in the congo forests
type: LOCATION
value: along with the main works
type: OTHER
Source sentences:
text: Yoruba fortifications were often protected with a double wall of trenches and ramparts, and in the Congo forests concealed ditches and paths, along with the main works, often bristled with rows of sharpened stakes.