This central peak uplift, or dome, is typical of a complex impact structure, where the liquefied rocks splashed up in the wake of the meteor as it penetrated the surface. Conservation The Vredefort Dome World Heritage Site is currently subject to property development, and local owners have expressed concern regarding sewage dumping into the Vaal River and the impact structure. The granting of prospecting rights around the edges of the impact structure has led environmental interests to express fear of destructive mining. Community The Vredefort Dome in the centre of the impact structure is home to four towns: Parys, Vredefort, Koppies and Venterskroon. Parys is the largest and a tourist hub; both Vredefort and Koppies mainly depend on an agricultural economy. On 19 December 2011, a broadcasting licence was granted by ICASA to a community radio station to broadcast for the Afrikaans- and English-speaking members of the communities within the impact structure. The Afrikaans name Koepel Stereo (Dome Stereo) refers to the dome and announces its broadcast as KSFM. The station broadcasts on 94.9 MHz FM. See also List of impact craters on Earth List of possible impact structures on Earth References External links Parys South Africa Impact Cratering Research Group – University of the Witwatersrand Earth Impact Database Deep Impact – The Vredefort Dome Satellite image of Vredefort impact structure from Google Maps Impact Cratering: an overview of Mineralogical and Geochemical aspects – University of Vienna Google Earth 3d .KMZ of 25 largest craters (requires Google Earth) Extinction events Impact craters of South Africa Landforms of the Free State (province) Proterozoic impact craters World Heritage Sites in South Africa