Gampaha flyover to Walpola station -Train Travel Sri Lanka (13/04/2021) 

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Gampaha flyover to Walpola station -Train Travel Sri Lanka (13/04/2021)
Train travel from colombo to vavuniya
this is main line train travelling in sri lanka. main line means Colombo Fort to ragama, Polgahawela, rambukkana, peradeniya, Kandy, Hatton & Badulla.
if you want to travel on puttalam line train, you need to change to Chilaw/ puttalam train on ragama. and if you want to travel on nothern line train, you need to change to Polgahawela station to Jaffna or vavuniya/ Anuradhapura train.