A Taiwan tour bus plunged 300 metres down a ravine deep inside the island\'s mountains in Hsinchu County on Sunday, killing 13 passengers. Ten others were injured in the crash, which occurred at 3 pm (0700 GMT), dpa quoted the Hsinchu fire bureau as saying. Authorities said the passengers were mostly alumni of a local elementary school, in their sixties, who had booked the bus to visit an aboriginal mountain village. \'Some died because they were thrown out of the bus,\' Lin Yuan-yuan, a fire bureau official, told dpa. \'Others were killed inside, as if they were thrown by the bus to the wrong spot at the wrong time.\'