A ƙarshen zamanin glaciers sau da yawa ya bar manyan ɗakunan kankara a cikin hollows tsakanin drumlins ko tuddai. Kamar yadda lokacin kankara ya ƙare, waɗannan sun narke don ƙirƙirar tafkuna. Wannan a bayyane yake a cikin Lake District a Arewa maso Yammacin Ingila inda wuraren da ke bayan glaciers suna da zurfin mita 4 zuwa 6. Wadannan tafkuna suna kewaye da drumlins, tare da wasu shaidu na glacier kamar su moraines, eskers da fashewar abubuwa irin su striations da chatter marks. Tambaya: Mene ne ƙananan ƙwayar kankara da ke motsawa da hankali wanda ya haifar da tarawa da kuma haɗuwa da dusar ƙanƙara?
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