A very interesting claim that there were some 2 foot gauge railways in Afghanistan in 1894 (one may have been at the Mashin Khana royal arsenal in Kabul).

MINUTES OF EVIDENCE.
Narrow-gauge railways.
Wednesday, 25th July, 1894.
J Harris in the Chair:
This 2-ft. line is also established in Madagascar where the French rule, it is also in Afghanistan, Turkestan, and Siberia. It was introduced there by Skobeloff. When he was meditating the invasion of India he had this introduced, and I may state that the Russian troops were seen using one of those railways on the frontier for military purposes before the British knew anything about it. When the outposts observed it they reported it to the Commander-in-Chief and he telegraphed to the War Office. The War Office ordered railways of this sort to be sent out straight. They were sent over mountains on the backs of elephants to the frontier. In Afghanistan there are several 2-ft. railways.
Source: Narrow-gauge railways, Minutes of Evidence at the railway standing committee, Victoria, Australia.