Bolshoy Log () is a rural locality (a settlement) in Zakovryashinsky Selsoviet, Krutikhinsky District, Altai Krai, Russia. The population was 93 as of 2013.Численность населения по муниципальным образованиям на 1 января 2011, 2012, 2013 гг. (в том числе по населённым пунктам) по данным текущего учёта There is 1 street.
Geography Bolshoy Log is located 16 km southwest of Krutikha (the district's administrative centre) by road. Zakovryashino is the nearest rural locality.Расстояние от Большоя Лога до Крутихи
References