Going deep underground in a mine and in a pit for gold and biomarkers (Dome Mines, Timmins, Ontario, Canada). 
Todd Ventura's field work (Ph.D. 2006)

On our way to Timmins (Ontario, CA) we saw many bears. One was sleeping on the warm asphalt.

They look cute from afar and fierce when they approach. We left quickly.

Hoyle Pond mine. It is a gold mine.

Fabien Kenig in the red overall that visitors must wear.

Todd Ventura working in the dark with our guide.

Waiting for the lift.

Going where gold is still extracted.

Climbing

Climbing more, narrower and narrower path.

Gold is visible, in many places here. Spectacular.

NO, I COULD NOT KEEP THAT ROCK LOADED WITH GOLD.

Going deep in an open pit mine. Todd Ventura is sampling.

You can easily fit the Eiffel tower in here. It is more than 300 m deep.