The Pinnacles are made of seashells. The limestone spires standing across Nambung National Park began as marine shell debris blown inland from Indian Ocean beaches, cemented by rain into hard rock, then sculpted by wind over several thousand years. Some reach 3.5 metres. Others break the sand by only a few centimetres. Together they number in the tens of thousands across a yellow quartz plain roughly two hours north of Perth. Dutch sailors charting this coast in the seventeenth century recorded the formations from offshore and mistook them for the ruins of an abandoned city. The error persisted for generations. The Yued people of the Noongar nation held knowledge of this country long before those charts existed, and the desert sits within their traditional lands. Nambung takes its name from a Noongar word associated with the winding course of the local river. The park was gazetted in 1994. The name Cervantes, the coastal town at its edge, comes from an American whaling ship wrecked nearby in 1844. What draws visitors to a pinnacles sunset dinner and stargazing tour today is a rare alignment of geology and sky. Western Australia's central coast carries almost no light pollution. Once the sun drops behind the dunes, the Milky Way's galactic core becomes visible with the naked eye, along with the Southern Cross, the Magellanic Clouds and the dark Emu constellation recognised in Aboriginal astronomy. The spires themselves function as foreground: pale limestone against black sky. Operators running Nambung National Park sunset tours from Perth time their arrival for this transition, which is why evening departures dominate the bookable inventory rather than midday ones. The park itself is open continuously, from 00:00 to 23:59 every day of the week, and charges 17 AUD for standard vehicle entry covering 12 or fewer occupants. The Pinnacles Desert Discovery Centre interprets the formation process and the region's stromatolite record — the living microbial structures at nearby Lake Thetis are among the oldest life forms represented on the continent. Sandboarding on the Lancelin dunes and the koala colony at Yanchep National Park appear on longer itineraries. Geologists still debate the precise mechanism. One theory holds the spires are casts of ancient plant roots. Another argues they are erosional remnants of a single dissolving limestone sheet. Both explanations remain in circulation. Pinnacles Desert, Cervantes, Western Australia 6511 — a landscape whose origin is contested even by the people who study it, and whose pinnacles sunset dinner and stargazing tour tickets now sell largely on what happens overhead after dark.