Yana Ucsha (possibly from Quechua yana black, very dark, uqsha (locally), uqsa high altitude grass,Teofilo Laime Ajacopa, Diccionario Bilingüe Iskay simipi yuyayk'ancha, La Paz, 2007 (Quechua-Spanish dictionary)Vocabulario-Comparativo-Quechua-Ecuator-Quechua-Ancash See Spanish: Paja - Ancash Quechua paha, uqsha Hispanicized spellings Yana Ucsha, Yanaucsha, Yanauscha, Yanahucsha, also Yanauksha) is a ridge in the Huaytapallana mountain range in the Andes of Peru, about high. It is also the name of a small lake at its feet at .
The ridge is situated in the southern part of the main sector of the range, south of Huaytapallana. It lies in the Junín Region, Huancayo Province, Huancayo District.escale.minedu.gob.pe - UGEL map of the Huancayo Province (Junín Region) showing the location of Yana Ucsha (Yana Uqsha) south-west of Nevado Cochas and west of the lake atuncocha (Hatunqucha, not shown, unnamed)monografias.com showing the location of Yanahucsha (Yana Uqsha) north-east of the lake Jatuncocha (Hatunqucha)
Beside the lake Yana Ucsha there are two larger lakes nearby named Jatuncocha and Carhuacocha.
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