An ajiye gadaje a gindin dutsen dutse mai tsawon mita 160, a ƙarƙashin zurfin da raƙuman ruwa suka girgiza a lokacin hadari. Wannan dutsen mai tsayi ya kunshi dutsen mai tsayi na Cathedral Formation, wanda ya samo asali ne jim kaɗan kafin a ajiye Burgess Shale. Ba a san ainihin tsarin samarwa ba, amma mafi yawan yarda da zato yana nuna cewa gefen gefen Cathedral Formation ya zama ya rabu da sauran reef, yana saukowa da kuma jigilar wasu kilomita <unk> a tsaye daga gefen reef.
tushe na wani dutse