Experts found Enceladus' tiger stripes formed on the south pole because this area happened to split open first. The fissures stay open and erupting as a result of the tidal effects of Saturn's gravity.
Slashed across the south pole of Saturn's moon Enceladus are four straight, parallel fissures or 'tiger stripes' from which water erupts. These fissures aren't quite like anything else in the Solar System. Researchers now think they have a model to explain them.