take any overnighter from mas to sbc/ypr...then take 16515 ypr karwar...runs on mon wed fri to majn. whole route is scenic plus post maq konkan starts. once u reach majn quit the train and stay at majn. nex day take tvc rajdhani early morning to enjoy konkan. reach panvel. full konkan in broad day light. then take a flight to guwahati from mumbai. Once u reach ghy take a bus or train to lumding. from lumding take lumding silchar barak valley. awesome traine plus scenes enroute. take a bus for return from silchar to ghy. if u wan u can enjoy darjeeling himalayan railways also. take a flight back from hwh to mas