Between Dunsborough and Yallingup, this 500,000-year-old cave is associated in Wardandi spirituality with the victory of the good spirit Ngilgi over the evil spirit Wolgine. To the Wardandi people it became a kind of honeymoon location. A European man first stumbled upon it in 1899 while looking for his horse. Formations include the white Mother of Pearl Shawl and the equally beautiful Arab's Tent and Oriental Shawl. Tours depart every half-hour. Check online for other options.
More adventurous caving options include the two-hour Ancient Riverbed Tour (adult/child $60/39), the 45-minute Express Adventure Tour (adult/child $47/29), the 2½-hour Explorer Tour (adult/child $88/52), the three-hour Crystal Crawl Tour (adults only, $110) and the four-hour Ultimate Ngilgi Adventure (adults only, $158). The Above & Below ticket (adult/child $30/15) includes entry to the Cape Naturaliste Lighthouse.
Well-marked bushwalks start from here.