By Roland Pease
Science writer

The possibility of building an underground "atom-smasher" four times the size of the Large Hadron Collider is to be explored by experts.

The decision follows a high level meeting of scientists last week in Geneva, near the European particle physics centre, Cern.

The proposal is for a 100-km tunnel which would encircle the Swiss city.

It would reach to the Alps in the east, the Jura mountains in the west and even go under Lake Geneva.

Maps showing the proposed route reveal that it dwarfs the existing LHC, which is itself a world record beater as a science facility.
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more: http://www.bbc.co.uk/news/science-environment-26250716