The Boulby Underground Laboratory is an amazing place: a self-contained, high-tech laboratory located 1.1km below ground, in the hot, desert-like conditions of the largest and deepest salt and potash mine in Europe. In this underground laboratory scientists and students from around the world work to try to answer some of the most fundamental questions in nature. Why is this cutting edge laboratory built deep underground, and just what is so important about the science we think we can do there? Read on and discover the strange world of underground science.