Uluru were tilted to their near vertical position during a later episode of mountain building, possibly the Alice Springs Orogeny of Palaeozoic age (400–300 Ma). Historically, 46 species of native mammals are known to have been living near Uluru; according to recent surveys there are currently 21. Aṉangu acknowledge that a decrease in the number has implications for the condition and health of the landscape. Moves are supported for the reintroduction of locally extinct animals such as malleefowl, common brushtail possum, rufous hare-wallaby or mala, bilby, burrowing bettong, and the black-flanked rock-wallaby. The mulgara, the only mammal listed as vulnerable, is
Local attraction Local attraction While compass surveying, the magnetic needle is sometimes disturbed from its normal position under the influence of external attractive forces. Such a disturbing influence is called as local attraction. The external forces are produced by sources of local attraction which may be current carrying wire (magnetic materials) or metal objects. The term is also used to denote amount of deviation of the needle from its normal position. It mostly causes errors in observations while surveying and thus suitable methods are employed to neglect these errors. The sources of local attraction may be natural or artificial. Natural sources include