Batasia Loop
The Batasia Loop is a spiral railway created to lower the gradient of ascent of the Darjeeling Himalayan Railway in Darjeeling district of West Bengal , India . 
<triplet> Darjeeling Himalayan Railway <subj> Darjeeling district <obj> located in the administrative territorial entity <triplet> Darjeeling district <subj> India <obj> country <triplet> West Bengal <subj> India <obj> country <triplet> India <subj> West Bengal <obj> contains administrative territorial entity