Siljan Ring proved inconclusive. Drilling for natural gas was resumed in the late 2000s and continues as of mid-2012. The scientific premise for prospecting of this sort is based on the work of physicist Vladimir Kutcherov, who is cooperating with Igrene, the company financing the drilling operations. Siljan Ring The Siljan Ring () is a prehistoric impact crater in Dalarna, central Sweden. It is one of the 15 largest known impact craters on Earth and the largest in Europe, with a diameter of about . The impact that created the Siljan Ring occurred when a meteorite collided with the Earth's surface during
Juan Luis Mora and third-choice in the second, playing no official matches in the latter as the Valencian Community side returned to the first division after a two-year absence; he retired from the game shortly after, remaining with the club in directorial capacities. Mora appeared for the Spanish under-21s in the 1996 UEFA European Championship, and played Olympic football in the same year. Espanyol Levante Valencia Spain U21 Juan Luis Mora Juan Luis Mora Palacios (born 12 July 1973) is a Spanish retired footballer who played as a goalkeeper. In 13 La Liga seasons (17 overall as a professional) he appeared in 238