Uncovering the secrets of Brazil’s cave systemsThe Brazil Cave Project will be the topic of discussion when photogrammetry expert and technical diving instructor evaluator John Kendall takes to the Tech Stage at the GO Diving Show ANZ this weekend (6-7 September). John is an explorer who specialises in underwater 3D modelling of archaeological and geological sites. He has been involved in dozens of investigations of dive sites using photogrammetric techniques, including the Mars shipwreck (1564), MS Estonia (1994), Panarea III Wreck (~300BC) and the Cave of Bones, Brazil (~11,000 years old). He is also an Instructor Evaluator for Global Underwater Explorers and sits on their Training Council. Surrounding the stages and features will be a broad range of exhibitors, from tourist boards and tour operators to resorts, liveaboards, training agencies, retailers, manufacturers, and conservation organisations.