Subjects with maintenance and repair work must be carried out are KakolanmEnki wastewater treatment plant and the River Aura shortfall tunnel cave
spaces, Merimiehenkatu, Kaarina, Raisio and Raisio river pumping stations and Kaarina pressure drain measuring station.
Today, both Devils Lair and Tunnel Cave are in Karri forest, and the other two sites are in coastal woodland and scrub.
Dortch suggests that when occupation of Tunnel Cave ceased, humans would have stopped firing the forest, further enabling understorey regrowth in that area at the time.
At Devils Lair between 26,000 BP and 13,000 BP, and at Tunnel Cave after 12,000 BP, quartz and calcite were the only materials present, except for a few items argued to be the re-use of ancient chert.
Raw material conservation is evidenced in the use of fossiliferous chert at Tunnel Cave at the time sea-level started to rise (17,000-16,000 BP).
Two bats were found at Tunnel Cave, approximately 160 km southeast of the barn and one bat was found approximately 280 km south at Colossal Cave in Kentucky.
Dis- tance Date Location Bats (km) 8 August 1988 Terre Haute 1 24 11 October 1988 Ray's Cave 1 60 13 January 1989 Colossal Cave 1 280 27 January 1989 Ray's Cave 11 60 27 January 1989 Tunnel Cave 2 150 12 April 1989 Ray's Cave 2 60 13 January 1990 Ray's Cave 1 60 6 March 1990 King Blair Cave 1 48 30 July 1992 Prairie City 6 3