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
Heiner Mora played for Costa Rica since 2010. He started all three matches for Costa Rica in the 2011 Copa América and played in the 2011 Gold Cup. Mora missed the 2014 World Cup due to injury and was replaced by David Myrie. Born to Dagoberto Mora and Luz Marina Mora, he was born and raised in Guácimo, where his father had a papaya farm. Heiner Mora Heiner Mora Mora (born 20 June 1984) is a Costa Rican professional footballer who plays for Deportivo Saprissa as a wingback. Heiner Mora began his career with Santos de Guápiles. He was a regular starter