Kalka railway station
Kalka railway station is the northern terminus of the Delhi-Kalka line and the starting point of the UNESCO World Heritage Site Kalka–Shimla Railway . 
<triplet> Kalka railway station <subj> Delhi-Kalka line <obj> connecting line <subj> Kalka–Shimla Railway <obj> connecting line <triplet> Delhi-Kalka line <subj> Kalka railway station <obj> terminus