On Mount Trebević above Sarajevo, a cement monolith snakes through wooded terrain – an elevated channel emblazoned with colorful graffiti. Locals and tourists enjoy walking along the pocked pathway, but a pleasant stroll doesn’t come without risk – at given moments, humans sling down it at speeds of more than 80 miles an hour.

This is the luge and bobsleigh run built over four decades ago for the Winter Olympics, which were held in Sarajevo in 1984, a moment of glory for Yugoslavia before the country split apart and descended into civil war. Today, despite its crumbling condition, the concrete trough still attracts young Bosnian athletes chasing Olympic dreams.