Question: How far is Yulara from a large sandstone rock formation world heritage site?

Context paragraphs:
The Wave, Arizona: The Wave is a sandstone rock formation located in Arizona, United States near its northern border with Utah.  The formation is situated on the slopes of the Coyote Buttes in the Paria Canyon-Vermilion Cliffs Wilderness of the Colorado Plateau.  The area is administered by the Bureau of Land Management (BLM) at the Grand Staircase-Escalante National Monument visitor center in Kanab, Utah.

Anangu: Anangu are members of several tribes considered the traditional Aboriginal owners of the large sandstone rock formation Uluru.  The term, which embraces several tribes, is more accurately spelled "Aṉangu" or "Arnangu" and pronounced with the stress on the first syllable: ] .

Rainbow Valley Conservation Reserve: Rainbow Valley Conservation Reserve is a protected area located south of Alice Springs, Northern Territory in Australia.  The reserve was established in 1990 to protect the unique sandstone formations and the Aboriginal art, artifacts and sacred natural objects within an area of 24.83 sqkm around a large sandstone bluff.  The sandstone layers in the main formation resemble the colored stripes of a rainbow, with the red-orange hues of sandstone that is rich with iron creating a strong contrast with the lighter shaded sandstone that turns pale yellow or gold in the late day sun as it shines on the northwest-facing cliffs.

Ticklish Rock: Ticklish Rock is an unusual sandstone rock formation.  located in Shrewsbury Township, Sullivan County, Pennsylvania.  The brown and green sandstone formation, which stands at the edge of a steep cliff and resembles an upright hammer, consists of a large horizontal block, 3 feet high, 8 feet long, and 6 feet wide (0.9 x 2.4 x 1.8 m), balanced upon a thin, 18 x pedestal.

Hanging Rock (Wabash River): Hanging Rock is a natural sandstone rock formation overhanging the Wabash River in Wabash County, Illinois, in the United States.  The rock formation is north of the town of Mount Carmel, Illinois, and located on land originally purchased by Thomas S. Hinde.  The formation was formed while the glaciers melted and carved the landscapes of North America.  The Native Americans were the first group of people to settle around Hanging Rock.  Later the Hinde family purchased the property and used it for tourism and business.

Yulara, Northern Territory: Yulara ( ) is an isolated town in the Southern Region of the Northern Territory, Australia.  It lies as an unincorporated enclave within MacDonnell Region.  At the 2011 census , Yulara had a permanent population of 887 on an area of 103.33 km2 .  It is 18 km by road from world heritage site Uluru (Ayers Rock) and 55 km from Kata Tjuta (the Olgas).  It is located in the Northern Territory electorate of Namatjira and the federal electorate of Lingiari.

Uluru: Uluru (Pitjantjatjara: "Uluṟu "), also known as Ayers Rock and officially gazetted as "Uluru / Ayers Rock", is a large sandstone rock formation in the southern part of the Northern Territory in central Australia.  It lies 335 km south west of the nearest large town, Alice Springs, 450 km by road.

Tassili n'Ajjer: Tassili n'Ajjer (Berber: , Arabic: طاسيلي ناجر‎ ‎ , English: "Plateau of the Rivers" ) is a heavily eroded sandstone rock formation in the Sahara desert, located on a vast plateau that encompasses southeastern Algeria, western Libya and northern Niger.  It features over 300 rock arches, dense clusters of eroded sandstone rock pillars, and steep cliffs and gorges, where water pools permanently at the surface.  Tassili n'Ajjer covers an area of over 72000 km2 .

Wedding Cake Rock: Wedding Cake Rock, also known as White Rock, is a sandstone rock formation located in the Royal National Park near Bundeena, New South Wales, Australia, accessible via the Royal National Park Coast Track.  The rock is one of many limestone formations that appear north of Marley Beach, and is suspended 25 m above sea level.  Wedding Cake Rock is noted for its scenic location and popularity with bushwalkers and tourists, as an attractive location for photography.  Its reputation, however, was damaged after the landmark saw a sudden spike in popularity in 2015, and subsequently fell victim to vandalism.  The rock was closed off from public access in May 2015 by the New South Wales National Parks and Wildlife Service, citing the dangerous behavior of recent visitors, and later, safety concerns, after a survey conducted the following month determined that the rock was unstable, and that it would collapse into the Tasman Sea within the next decade.

Waldschlösschen Bridge: The Waldschlösschen Bridge (German: Waldschlößchenbrücke or Waldschlösschenbrücke ) is a road bridge across the Elbe river in Dresden.  The bridge was intended to remedy inner-city traffic congestion.  Its construction was highly controversial, as the Dresden Elbe Valley had been declared a UNESCO World Heritage Site and UNESCO expressed strong concerns against the bridge, noting its intent to withdraw the World Heritage title if the bridge were built.  As a result of this project, the Dresden Elbe Valley was listed in 2006 as an "Endangered World Heritage Site" (one of two in Europe, the Medieval Monuments in Kosovo being the other one), and in 2009 became only the second World Heritage Site to be de-listed.

Supporting paragraphs: Yulara, Northern Territory Uluru
Answer: 18 km