This cast iron tower was once part of the South Brisbane Gas and Lighting Company factory in West End. It was made in Yorkshire, England and put to use from 1912 until 1942. It was decomissioned in 1970 and moved to the current site in 1980. According to the Queensland Heritage Register, this is the only surviving gas stripping tower in Australia.
"The tower was used in the removal of tar and ammonia from raw coal gas. Gas was piped into the base of the tower, from where it rose to the top via a series of internal baffles over which water was sprayed from a header tank at the top of the tower, stripping the gas of coal tar and ammonia in the process. The liquid was drained via a water seal at the bottom, and sold as ammonia liquor." (https://heritage-register.ehp.qld.gov.au/placeDetail.html?siteId=15117)
Please also take a moment to admire the beautiful old fig trees in the area.
The area can be very busy with exercising muggles, and on Saturdays the market held in Davies Park is worth a look, but perhaps not an ideal time to hunt this cache down.
BYO log extraction tool and pen. Please ensure cache is replaced carefully.