mention a few rituals followed by them?
They ritually kill their cattle with unusual violence, cook and consume beef prepared thereafter ceremoniously
Merina people
 The Merina people also ritually kill their cattle with unusual violence, cook and consume beef prepared thereafter ceremoniously.
what is ambohimanga? A hill and traditional fortified royal settlement in Madagascar from where did it get its name? It is a noun-adjective compound in the standard Malagasy language composed of two parts: "ambohi", meaning "hill", and "manga", which can mean "sacred", "blue", "beautiful" or "good" which people reside in that settlement? Merina people
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Merina people [SEP] Ritual and folklore
The "Vazimba" feature prominently in Merina oral history and popular imagination. It has been speculated that the Vazimba were the original population of Madagascar, descended from Southeast Asian seafarers who may have had pygmy physical characteristics. Among some Malagasy, the Vazimba are not believed to be human at all, but rather a form of supernatural creature possessing magical powers ("mahery"). In the first seven years of their lives, boys are typically circumcised in a ritual wherein relatives request the blessings and protection of the ancestors. The Merina people also ritually kill their cattle with unusual violence, cook and consume beef prepared thereafter ceremoniously.