Duwatsun Never Summer

Tsaunukan da ba a taɓa taɓa yin rani ba (daga Arapaho : Ni-chebe-chii ) wani yanki ne na tsaunuka a cikin tsaunukan Rocky a arewa ta tsakiyar Colorado a Amurka wanda ya ƙunshi kololu sama da ashirin. Yankin yana kan iyakar arewa maso yamma na Dutsen Dutsen Rocky National Park, yana samar da S-juya a cikin rarrabuwar nahiya tsakanin mashigin ruwan kogin Colorado a cikin Dutsen Dutsen Rocky da babban kwarin kogin North Platte ( Arewa Park ). Tsawon yana da ƙanana kuma tsayi, yana rufe  kawai   mai tsayin arewa zuwa kudu na  tare da kololuwa daban-daban sama da goma sun haura sama da  . Kewayon ya ratsa layin Jackson - Grand County na tsawonsa, kuma ya shimfiɗa zuwa gundumar Jackson da Larimer a ƙarshen arewacinta. Ana samun ra'ayi mai ban sha'awa na kewayon daga sassan Trail Ridge Road a cikin Parky Mountain National Park. Ɗaya daga cikin kololuwar arewa, Nokhu Crags, yana bayyane daga gefen yamma na Cameron Pass .

 Geology 
Yawancin duwatsun da ke cikin tsaunin bazara ba su da ƙanƙanta fiye da kewayen Dutsen Rocky. Volcanic da kutsawa matakai shekaru miliyan 24-29 da suka gabata sun haifar da Rani da Kunnuwan Zomo zuwa yamma.  A yau, abin da ya rage shine gutsuttsuran tsaunuka masu girma da yawa; da farko ɓangarorin granitic mai ban tsoro tare da abun ciki na metamorphic na baya. Yawancin kololuwa mafi girma a cikin kewayon sune granodiorite waɗanda aka ɗaukaka a lokacin zamanin Miocene . Babban koli mafi girma na kewayo, Dutsen Richthofen, shine ragowar filogin volcanic na andesite . Nokhu Crags a arewa galibinsu suna tsaye ne a tsaye Pierre Shale wanda ya fito daga zamanin Cretaceous . Babban laifin tuƙi a ƙarƙashin kwarin Kawuneeche ya cusa tsoffin duwatsun Precambrian a saman ƙaramin duwatsun Cretaceous a gefen gabas na kewayon. Kololuwar kudanci sune granite mai shekaru Miocene, kuma a ƙarshe Precambrian mai tsufa biotite gneiss da schist .  

Tun daga shekaru miliyan biyu da suka gabata, glaciers sun fara sassaƙa ƙolo-ƙoƙon tuddai na tsaunin bazara. Raƙuman ruwa na glaciation ya ci gaba da sake fasalin tsaunuka har sai da Pinedale Glaciation ya ƙare shekaru dubu goma sha biyu da suka wuce. Harris, Ann G., Esther Tuttle and Sherwood D. Tuttle, Geology of National Parks, Kendall/Hunt Publishing Company, 6th ed., 2003, 

Dutsen kololuwa ne manya-manyan yanayin yanayi na dutsen dutse wanda aka lulluɓe shi da koren lemun tsami da lemu wanda aka kewaye da manyan filayen talus da aka zubar daga kololuwar asali. Tafkunan tsaunuka da yawa suna cikin kan kololuwa. Yawancin ciyayi na itace ba su da girma kuma ba su da girma. Bishiyoyi kaɗan ne ke tsiro a mafi tsayi kuma Krummholz yana da yawa.

 Tarihi 
A shekara ta 1879 masu neman azurfa sun gano a Dutsen Shipler, suna fara karamin hakar ma'adinai. An gina garin hakar ma'adinai kuma an ba shi sunan Lulu City, wanda ke 40°26′44′′N 105°50′53′′W / 40.44556°N 105.84806°W / 40.434556; -105.84806. An kafa wasu ƙananan ƙauyuka a yankin, gami da Dutchtown, wanda ke cikin Hitchens Gulch. Yawan jama'a ya karu har zuwa masu hakar ma'adinai 5,000 da masu kasuwanci da ke ba da abinci ga waɗancan masu hakar. Koyaya, ƙananan ma'adinai, haɗe da wahalar sufuri da rashin mai narkewa na gida don sarrafa ma'adinin, sun yi makirci game da haɓakawa. A ƙarshen 1883 aikin hakar ma'adinai ya ƙare kuma masu hakar ma-adinai sun ci gaba. Masu hakar ma'adinai na ƙarshe a Dutchtown sun bar a shekara ta 1884. Rocky Mountain National Park: A History, C. W. Buchholtz, (University Press of Colorado; 1983)  A yau ana iya samun ragowar garuruwa da ma'adanai ta hanyar hanyoyin tafiya.

A cikin 1890 an fara wani aiki mai suna Grand Ditch . Tsawon  aikin karkatar da ruwa. Koguna da rafukan da ke gudana daga kololuwa mafi girma suna karkatar da su zuwa cikin ramin, wanda ke bi ta hanyar La Poudre, yana isar da ruwan zuwa Tekun Atlantika don amfani da manoman filayen gabas. Ramin ba a kammala shi ba sai 1936. Ramin yana karkata tsakanin kashi 20 zuwa 40% na kwararar ruwa daga tsaunukan bazara kuma yana tasiri sosai ga muhalli a cikin kwarin da ke ƙasa.  A cikin Mayu 2003 mai  wani sashe na ramin da ya keta wanda ya sa ruwan ya gangaro daga gangaren gangaren zuwa kogin Colorado. Ambaliyar ta bar wani tabo a gefen dutsen. 

A cikin 1914, Ƙungiyar Dutsen Colorado ta kawo 'yan kabilar Arapaho zuwa yankin. 'Yan kabilar da suka yi kuruciyarsu a yankin an tambayi sunayen harshen Arapaho don kololuwa, tafkuna da sauran siffofi. Sun kira kewayon Ni-chebe-chii, wanda aka fassara a lokaci guda da "Kada-Ba-Rani". Kwamitin Geographic na Colorado ya zauna akan Dutsen bazara don sunan. High Country Names, Louisa Ward Arps and Elinor Eppich Kingery, (Rocky Mountain Nature Association; 1994), p. 115  Fassarar da aka sabunta na yanzu sune "Ba Lokacin bazara" ko "Kada Lokacin bazara (Wuri)".

Yawancin kololuwar da ke cikin kewayon ana kiran su da nau'ikan girgije, kamar Dutsen Cirrus da Dutsen Cumulus.

 Nishaɗi 
Masu tafiya da masu tafiya a baya a lokacin rani ne ke zuwa kewayon, da kuma masu hawan kankara da dusar ƙanƙara a cikin hunturu. Yankin yana ganin wasu ayyukan hawan dutse, amma dutsen yakan zama ruɓe (ko <i id="mwgg">zaɓe</i> ) kuma hanyoyin suna da haɗari. Titin kogin Colorado a cikin Dutsen Dutsen Rocky yana da hanyoyin da ke kaiwa ga Babban Ditch da ragowar garin Lulu. Hanyoyi daga Cameron Pass suna kaiwa zuwa tafkin Michigan, Lake Agnes da yankin Nokhu Crags. Hanyoyi a kusa da dajin Routt na ƙasa suna kaiwa zuwa jejin bazara a gefen yamma da kudancin kewayo.

 Dutsen Kololuwa 

 Manazarta 

Rukuni:Shafuka masu fassarorin da ba'a duba ba