Biruaslum

Biruaslum ko Bioruaslam tarin ne a cikin Barra Isles na Scotland, a yammacin Vatersay . Kimanin kilomita 2.5 (1 + 1⁄2  daga hanyar da ta fi kusa, ya kai    a tsawo kuma akwai wani sansanin da aka rushe a gefen kudu. Francis G. Thompson ya bayyana shi a matsayin "babban kuma kusan ba za a iya isa ba";  James Fisher ya ambaci "fulmar yana tashi sama da ƙasa da ƙaramin dutsensa".Fisher p. 114.

 Ginin dutse 
Duwatsun da ke tsaye a gefen gabas na tsibirin da ke raba shi daga Vatersay suna kare shafin daga teku da ku bango da aka gina da kyau wanda ke da   + 1⁄2  fadi da    a wurare yana kewaye da wani yanki mai zurfi. Ganuwar tana da tsawon mita  (160  kuma an kiyaye ta mafi kyau a ƙarshen kudu maso gabas. An haɗa shi da gefen dutse na bango shine ragowar ƙaramin tsari mai laushi game da  m2  sq ft) a yankin. Halin sansanin yayi kama da tsarin Iron Age da aka sani daga Ireland amma kawai abubuwan da aka gano har zuwa yanzu sune tukwane na Neolithic.Branigan (2007) p. 67

 Manazarta