<prompt> Le ndawo, efinyelela kude enyakatho njenge-60 eningizimu ye-latitude, imbozwe ama-tectonic fractures and ridges. Le ndawo inezinhlamvu ezimbalwa eziphawulekayo, okusikisela ukuthi yindawo encane kunazo zonke e-Enceladus nakunoma iyiphi i-satellite yeqhwa ephakathi nendawo; ukumodeliswa kwesilinganiso se-cratering kusikisela ukuthi ezinye izindawo zendawo eningizimu ye-polar kungenzeka ukuthi zisencane njenge-500,000 iminyaka noma ngaphansi. Eduze nendawo yale ndawo kukhona ama-fractures amane aboshwe ngama-ridges, ngokungahleliwe abizwa ngokuthi imigqa ye-tiger.  <response>: Unyaka ka-2005 