Formed by lava thrusting up through sandstone bedrock 25 million years ago, the Glasshouse Mountains form an imposing backdrop to farming country in the Sunshine Coast Hinterland. Deposited in the Early Jurassic Period, this rock formation—known as the Landsborough Sandstone—forms the bedrock for most of the coastal plain from Brisbane’s northern suburbs to Coolum and hosts a range of fossil plants including ferns, seed-ferns and conifers.