Port Augusta: Yorkeys Crossing Top of the Gulf 💧🛶 🚂 The Spencer Gulf meanders its way north at Yorkeys Crossing. Here it can be seen flowing under the Adelaide to Darwin railway line Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to email a link to a friend (Opens in new window)Click to print (Opens in new window)