"Filming the series ended up being a greater learning experience than I had expected," Leto said. "We started with exactly the story we wanted to tell, and we ended up with an experience that was better and better with every episode." Here, the camera flies over Grand Prismatic Spring, the largest hot spring in the U.S. It is just one of many stunning, alien geysers and hot springs in the national park.
“You would have a tourist get out of an RV and say something as profound as someone who’s hanging off the edge of a 3,000-foot drop,” Leto told a group at a screening in Los Angeles earlier this month. “That was really cool to see that. Everybody having a different experience and getting something out of the parks and these places.”