The three FCAB units Clyde GL26C-2 2005, Clyde GL26C-2 2010 and EMD GR12 2402 are catching the last rays of sunshine as they pull their somewhere around 2000 tonnes train uphill towards Ascotan summit - 3965m a.s.l.! In the background you can see the Salar de Ascotan (salt lake Ascotan), an unidentified volcano (left) and the active volcano "Ollagüe" (right).
I was close to a collapse when taking this picture - running uphill at over 3800m isn't much fun.