On Sunday this was posted..pic 1. 4839776

Last Coordinates 43.1778 N, 103.9151 W.

puts you at some bunkers in South Dakota..pic2.

Which is a LAB for underground sound waves.

Http://wwww.sanfordlab.org

630 E. Summit St. Leed. SD. 57754

Dig good or Bad?

Largest underground facility..pic 3..4840468

Not far from Wonderland Cave spot (didn't calculate the distance) see map of area…pic 4