Parassala railway station (station code: PASA) is an NSGâÂÂ5 category Indian railway station in Thiruvananthapuram railway division of Southern Railway zone. It is a railway station in Thiruvananthapuram district, Kerala. It is the southernmost railway station in Kerala and simultaneously marks the beginning of Kanyakumari district, Tamil Nadu at Kaliyakkavilai, therefore serving both Kerala and Tamil Nadu border areas of the region.