'The Silent Quake'. Since 1992, the Province of Groningen in the Netherlands has been hit by over 1000 earthquakes due to gas extraction. This has led to 100,000 claims. Albert and Annemarie live in the heart of the earthquake zone. In and around their farm, dozens of cameras are installed to record the quakes. It is a difficult issue cause 7,6 million households in the Netherlands and 6,9 million in Belgium, Italy, France, and Germany are depending on Dutch natural gas.