Unusual Train Bucket List

Green railway tunnel formed by trees arching over a working track.

Ride one of the world's longest trains.

Switchback railway descending a near-vertical Andean wall at Alausi.

Rattle along old rails on a bamboo platform powered by a motorbike engine — dismantled when another train comes.

Rusting steam locomotives abandoned on the edge of the salt flats a century ago — a surreal stop on the way to the Salar.