A Mountain of Railroad Ties

How do you climb a mountain of stacked railway ties? This 1937 photograph by Fox for the Daily Herald was taken in the Great Western Railway sleeper creosoting works in Hayes, Middlesex, England ("railway sleeper" is what railroad ties are called in the rest of the world; creosote is a chemical used to preserve the wood).

As explained by the Daily Herald Archive from the National Media Museum, the steps are created from the individual ties themselves so workers can reach the top without using ladders.