Mountaineering
You just need to see the smiling faces of St. John Paul II climbing the slopes with skis on his back, or Blessed Pier Giorgio Frassati scaling mountains with his friends, to notice the truly holy endeavor of reaching the top of a mountain. While surrounded in the glorious sights of God's creation, there's no better place to experience God's grandeur, and it takes some impressive fitness levels to achieve it!
+© Ajay Bhargav | CC0