• Info
  • Spherical view
  • Tiny planet view
  • Share
  • Edit
  • Virtual reality
  • Fullscreen
  • Hotspots are publicly visible only with a Kuula PRO account. Learn more

  • Precambrian (Proterozoic) Idaho Springs Formation exposed along the Central City Parkway, east of Idaho Springs Colorado. Rocks visible in the near outcrop are largely biotite gneiss with tightly folded quartzo-feldspathic layers visible near ground level. Across the road are pegmatitic instrusive rocks.