 Many cave shelters throughout the national parks that flank Sydney --- the Royal to the south, the Blue Mountains to the west and Kuring-gai Chase to the north --- were depression-era dwellings of the 1930s, such as the former fishermen's caves at Cape Solander (Botany Bay), the caves in the Domain in the city, and Poet's Cave in Lane Cove National Park, Sydney, that was inhabited by a hermit who was also believed to be responsible for a biblical inscription on a rock in the park.In north-western New South Wales caves were occupied at Lightening Ridge and in the Warrumbungle Ranges, the latter reputedly used by cattle duffers (dates unknown).Other "hermit-type" dwellings like the Crater Cove huts on Sydney Harbour and huts along the Hawkesbury River grew in popularity in the 1930s depression but originated earlier and continued their existence later as communities of fringe dwellers.