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), 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.