A similar, striking prosodic pattern is reported to occur in languages around Australia. It is characterised by a stretch of level, high pitch, and lengthening of the IP-final vowel. This pattern appears to have a similar meaning in each language, expressing the extension of an event in space or time. However, there are some differences in the form described. In this paper, we present a study of the acoustics of this pattern in three unrelated Australian Indigenous languages, and propose a method for automatically identifying examples within an audio file. Hence, the purpose of this paper is twofold: 1) to provide a cross-linguistic description of this prosodic pattern with the aim of acoustically describing cross-linguistic variation, and 2) to provide a proof-of-concept for a method to automatically identify this pattern which could allow other language data to be incorporated into the typological description in the future.