Gravity balance up-down walking supported by circulating rope in mountain is easier than walking in plain. - Lok B. Baral; Jeevan J. Nakarmi; Khem N. Poudyal; Nava Raj Karki; Dimitrios Nalmpantis; Hari B. Dura; Vishwa P. Amatya (Int. J. Syst. Assur. Eng. Manag., 2021)