Facebook CEO Mark Zuckerberg has been touring the United States in an effort to meet folks from every state in the U.S.

On Wednesday he paid a visit to the Sanford Underground Research Facility by Lead, South Dakota.

Zuckerberg had lunch today with the Norman family on their 2,500 acre cattle ranch in Western South Dakota.

Then he went live from a mile under the Earth's surface at the Sanford Underground Research Facility.

Google Maps

Hope you enjoyed your trip, Mark!  I'd like to personally invite you to visit Sioux Falls!  We can have an ice cream at B & G's!

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