Indonesia is a country which has rich culture. Each province or region bears their own culture. So there are many local languages beside national language.
It is very common if people in Indonesia are able to speak national language and their local language. Sometime there is a joke that come from one local languages, so when person tell that joke, the only ones can understand are the people that come from same region. The others cannot understand that joke.
There are many local languages in Indonesia. Each language is very complicated and has theirs own structure. Furthermore, in each language lies wisdoms and story about life. So there are many wisdom and stories in Indonesia.
I just want to tell you that Indonesia has very rich wisdoms and stories.