Brookton Highway is a 112-kilometre long undivided single carriageway highway in Western Australia, running from the southern Perth suburb of Kelmscott, through Westdale, to the southern Wheatbelt town of Brookton. From Wikipedia
Kyle Retallack, Joshua Cox, and Chloe Websdale lost their lives when their vehicle collided with a tree on Brookton Highway during their return from a camping trip.