Deep within the Sahara Desert are vast supplies of iron ore, which is extracted and dumped into a train 1.8 miles in length. The train then embarks on a 437-mile journey to the Mauritanian coast, a trek captured in spectacular fashion on film recently by National Geographic.

The railway in question is the the Mauritania Railway, which has been transporting iron oreā€”in addition to humansā€”across the Sahara since 1963. Itā€™s captured here in dazzling, often meditative detail.

Look at that train! It carries enough iron to rebuild the Eiffel Tower, though I donā€™t imagine anyone is actually planning to do that. In real terms, thatā€™s over 22,000 tons of iron ore per trip, with free rides for any humans along the route, which can take up to a day to complete.

The film was directed by the mononymously-named director Macgregor, as part of a series of short films spotlighted by Nat Geo. More giant trains, please.