The Sierpinski Tetrahedron: A Metal Sculpture
Sunny, -17 degrees Fahrenheit, 30 mph wind, and two feet of snow.
Minnesota winters are tough, but so is the Sierpinski Tetrahedron.
The park bench is out of order.
This view shows an interesting look at the tetrahedra.
The Sierpinski Tetrahedron with the Ottertail River in the background.