Hillwood Volcano
Hillwood Volcano is an extinct volcano located near Hillwood in Northern Tasmania Australia, with an elevation of  above sea level. Located on private property, the site was accessible to local rock climbing groups. It is known as the Checkerboard by local climbers. The property owner erected signage prior to 2022 prohibiting access to the climbs. It is believed that some climbers were leaving unwanted rubbish and causing damage to the property with their vehicles. Geology 
The Hillwood Volcano is a Tertiary Basaltic Outcrop to the Northwest of Murphys Hill. It features columnar basalts with small sparse vesicles containing zeolites. References 

Volcanoes of Tasmania
Inactive volcanoes