Includes 13 peaks over 100 m high in the Glass House Mountains in Queensland, Australia. These National Heritage-listed mountains are rhyolite and trachyte volcanic plugs that rise from the coastal lowlands roughly an hour north of Brisbane. What the mountains lack in height they make up for in often airy scrambles along volcanic rock faces with vast views. 12 of the included peaks lie in Glass House Mountains National Park and one peak (Wild Horse Mountain) is in the nearby Beerburrum East State Forest to the east. The peaks range in difficulty from gentle to serious scrambling. Note this challenge excludes Mount Coonowrin (Crookneck) 377 m since it has been closed since 1999 due to unstable rock. Challenge created by peakery member lahs.