South Africa is a weird and wonderful place, with weird and wonderful people. Join MARELISE VAN DER MERWE as she journeys through this peculiar country, writing those stories that you wouldn't find elsewhere. This is the second instalment.
Dewald van Deventer tells me about going hiking with Daniel Kish, the granddaddy of human echolocation - a method of 'seeing' or acoustic navigation where a person uses clicking of the tongue (or cane, or any other object) to create small echoes of reflected sound that create a picture of the surrounding area. It's similar to the sonar and animal echolocation used by bats, toothed whales and dolphins.
...