This image is a composite of a Milky Way taken in September and a foreground I took over the weekend, the caves are only open for a short period of time each year (between October and April I believe) and are tidally influenced so there are set hours each day that the caves are open to the public, the foreground is 3 shots at 28mm, iso 50, f4.5 and 1/4000, 1/2000, 1/1000 merged into an HDR with the sky being a 3x5x60s at 40mm f2.8 and iso 640. The sky was taken on a Sony a6300 and Tamron 28-200mm and the foreground was taken on a Sony a7 iii and Tamron 28-200mm