Cave wonderland

"Like walking in an underground wonderland," remarked NASA astronaut Mike Fincke when underground in the Sa Grutta caves in Sardinia, Italy, for ESA's CAVES training course.

CAVES, an abbreviation of Cooperative Adventure for Valuing and Exercising human behaviour and performance Skills, prepares astronauts to work safely and effectively and solve problems as a multicultural team while exploring uncharted areas using space procedures.