The KTB or Continental Deep Drilling Programme in Windischeschenbach, Germany was a scientific drilling project between 1987 and 1995 which resulted in one of the worlds deepest boreholes with a final depth of 9101m👀 The actual idea of the project was to drill into, and find the suture zone where two contintes namely Avalonia and Armorica collided during the variscan orogeny which took place 370-290 million years ago⛰️ The intention in the first place was also to create the deepest borehole eve