discovering an ancient alien passage

darkness light night lighting screenshot infrastructure sunlight tunnel reflection wall temple symmetry cave arch art alley formation deserted touring lights still functioning ai-generated underground gate gates iron steal open remains lit path road debris left untouched cavern pathway boulder boulders fog foggy mist misty dusty dust sun ray rays discovering ancient alien passage leading undiscovered knowledge extra terrestrial terrestrials mystery mysterious technology technological frame ufo conspiracy conspiracies civilization hidden secret top undisclosed undisclosure disclosure area structure