Training in spectacular underground caves

[Eldorado]

"Astronauts are training for future missions to the Moon and Mars in a massive underground cave that mimics the conditions they will face on in space.

"The cave, located in Slovenia, contains "a labyrinth of passages mostly unexplored and rich in indigenous species,” according to course director Francesco Sauro.

"It is "the closest you can get on this planet to the environmental, psychological and logistics constraints of a space mission,” explains course designer Loredana Bessone."

Full article with nice pics at the UK Mirror: https://www.mirror.co.uk/science/astronauts-train-future-missions-moon-20049210

And at the ESA: http://www.esa.int/Our_Activities/Human_and_Robotic_Exploration/Caves/A_new_journey_into_Earth_for_space_exploration?