Kubu is a Malayic language spoken in the southern swamps of the island of Sumatra in Indonesia by the Kubu people (Orang Rimba), many of whom are nomadic. There is a degree of dialectal diversity.
In Bukit Duabelas (Jambi), the Rimba language is very glottal, which initially makes it difficult to understand.[2] Some of the variations in Kubu isolects have been presented by Dunggio.[3]
References
^Kubu at Ethnologue (18th ed., 2015) (subscription required)
^Sager, Steven (2008). The Sky is our Roof, the Earth our Floor: Orang Rimba Customs and Religion in the Bukit Duabelas Region of Jambi, Sumatra [1]