Head to Es Niu Blau beach, a walkable couple of kilometres away for a smaller, quieter beach with the trendy Pura Vida Beach Club to provide your cocktails. (loveholidays.com)
«Deep Earth Imaging is going to have to deliver something meaningful about the top couple of kilometres of the surface of the earth, otherwise it is in danger of being an academic exercise,» Mr Craske says. (csiro.au)
Today, there is a number of detectors placed approximately a couple of kilometres below Earth's surface, and there is a very specific reason for their placement so far below ground: if dark matter interacts weakly with ordinary matter (as also the neutrinos do), only these two species can penetrate kilometres of Earth's crust without being stopped. (sciencedaily.com)