Koguna na Maastricht

Kogon Maastricht, wanda kuma aka fi sani da kogon Dutsen Saint Peter  ko Ƙarƙashin Ƙasar Maastricht, tarin dutse ne na dutsen dutse a Maastricht, Netherlands, wanda asalinsa ya samo asali ne tun ƙarni na 13.

Tun asali an tona su a alli na .  A cikin duka, an yanke hanyar sadarwa na 20,000 tunnels a cikin dutse, wanda 8,000 har yanzu ba su da kyau. 

A ƙarshe an daina amfani da ma'adinai don hakar ma'adinai, saboda darajar lemun tsami ta ragu. Tsawon ƙarnuka da yawa, an zana zane-zane akan bangon dutsen, wanda ya ba da jan hankali ga masu yawon bude ido waɗanda za su iya zagayawa da wasu sassan dutsen.   

A lokacin yakin duniya na biyu, an yi amfani da dutsen dutsen don adana hotuna masu daraja da kayan yaki da za a iya amfani da su a kan Jamusawa, ciki har da wata rundunar da aka tsara na tankokin yaki 30 da za su kai farmaki kan Jamusawan da aka shirya kai hari a daidai lokacin da ake samun 'yanci. Baya ga sojoji, sama da ] [ 6,000 sun sami mafaka a wuraren da ake kaɗawa a lokacin yakin duniya na biyu.  Bayan yakin, an yi shirin yin amfani da rukunin karkashin kasa a matsayin mafakar bam.

Daga cikin zane-zanen da aka ɓoye a cikin ƙwanƙwasa a lokacin WWII shine The Night Watch na Rembrandt van Rijn . Zaren wanda ya auna 363 × 437 cm an ware shi daga firam ɗinsa kuma an mirgine shi cikin babban silinda.

Wani babban yanki na tsohon tsarin rami ba ya wanzu yayin da dutsen da ke kewaye da shi ya keɓe a cikin buɗaɗɗen ma'adinan simintin ENCI . An daina fasa dutse a cikin 2018. 

 Manazarta