Category Events - Australia, Hobart (TAS) The Writing Cave is a space for communal writing time in a 3 hour block. Located in the offices of Island magazine in the old Mercury Building at 91-93 Macquarie Street, Hobart. $2 donation to cover use of the space plus tea, coffee and milk. Someone will be at the front door at 6pm to let people in. If running late, please call (03) 6234 1462 and someone will come down to let you in.