Check out the "Sun Tunnels" by Nancy Holt

Building 1
Sun tunnels #questival
Questivus for the rest of us
#stereotypicalalbumcover #questival
Pepinos Limones
#questival
Voltron Force
#questival
sparkling spankies
Got" sun" #questival
Squishy Frogs
#questival
Andventure Time
Coolest cement tubes in the middle of nowhere we've ever seen. #questival
Four Blind Mice
SUN TUNNELS BY NANCY HOLT😝 #questival
Front Range Deranged
#NotWorthTheTrip #questival
Captain Fantastics
sun tunnel time #questival