Where exactly do the Uluru coordinates point?
Coordinates (-25.345000, 131.036389) point to the geographic center of Uluru (Ayers Rock), the massive 348-meter-tall sandstone monolith in the Northern Territory of Australia. The base of the rock has a circumference of 9.4 km. The full Uluru-Kata Tjuta National Park covers 1,326 km². Climbing Uluru has been prohibited since October 2019, in accordance with the wishes of the Anangu traditional owners; visitors can still walk around the base.
Is the Dead Sea coordinate at sea level or below?
The Dead Sea coordinate (31.500000, 35.500000) is the lowest point on Earth's land surface, at approximately -430 m (-1,411 ft) below mean sea level (and dropping ~1 m per year due to declining water levels). It is a hypersaline lake bordered by Jordan, Israel, and the West Bank. The salinity (~34%) is about 9.6 times that of the ocean.
Why is the General Sherman Tree listed as a natural landmark?
The General Sherman Tree, a giant sequoia (Sequoiadendron giganteum) in Sequoia National Park, California, is the largest tree on Earth by volume (1,487 m³ / 52,500 cubic feet of trunk wood). It stands 83.8 m / 275 ft tall, with a circumference at the base of 31.1 m / 102 ft. Estimated to be 2,200-2,700 years old. The coordinate (36.581667, -118.751667) points to its base; the tree is fenced off to protect the shallow root system.
Where exactly is the Cape of Good Hope, and is it really the southernmost point of Africa?
No. Despite its fame, the Cape of Good Hope is the southwestern tip of Africa, not the southernmost. The actual southern tip is Cape Agulhas, about 150 km to the east-southeast, where the Atlantic and Indian Oceans officially meet. The Cape of Good Hope was simply the navigational landmark that early Portuguese explorers (Bartolomeu Dias in 1488) had to round to reach the Indian Ocean, which is why it gained iconic status. Coordinates here point to the rocky cape promontory inside Table Mountain National Park.
Why is Deadvlei full of dead trees?
About 800 years ago, the Tsauchab river that fed Deadvlei was cut off when the surrounding red sand dunes (some over 350 m tall) advanced and blocked its flow. The camel thorn trees (Vachellia erioloba) growing in the pan died from drought, but the climate is so arid (less than 100 mm of rainfall per year) that the wood cannot decompose. The blackened skeletons that remain today are over 600 years old, scorched by the sun rather than fossilised. Deadvlei sits inside Namib-Naukluft National Park, accessed from the Sossusvlei gate.
How can a tree be the world's oldest historically authenticated tree?
Many older trees exist (the Methuselah bristlecone pine in California is roughly 4,800 years old), but Jaya Sri Maha Bodhi in Anuradhapura, Sri Lanka, has the longest continuous documented history. It was planted in 288 BCE from a cutting of the original Bodhi tree at Bodh Gaya under which Gautama Buddha attained enlightenment. The cutting was brought to Sri Lanka by Sangamitta, daughter of the Indian Emperor Ashoka. Continuous monastic records spanning more than 2,300 years document its care, making its age provable rather than estimated.
Why are three different European capes (Cabo da Roca, Cape of Good Hope, Cape Horn) listed?
Each marks an extreme of a continent or sea route used historically by sailors and navigators. Cabo da Roca in Portugal is the westernmost point of mainland Europe (latitude 38.78° N, longitude 9.50° W). Cape of Good Hope in South Africa is the southwestern corner of Africa, marking the turn into the Indian Ocean. Cape Horn in Chile is the southernmost point of South America at the tip of Tierra del Fuego, the historic boundary of the Drake Passage and one of the most feared sailing waters on Earth. All three were critical to the Age of Sail trade routes.
Is the Dead Sea still shrinking, and will the coordinate move?
Yes. The Dead Sea is dropping about 1 m per year due to upstream water diversion (mainly the Jordan River) and mineral extraction. Its surface area has shrunk by roughly a third since 1960. The coordinate in this catalog points to the centre of the lake at its present extent and may need to be updated as the shoreline retreats further. The lake split into a smaller northern basin and a shallow southern basin (now industrial evaporation pools) decades ago. Sinkholes have formed along the receding shore, especially on the western Israeli side.