Shango is the god of thunder and lightning in the Yoruba culture.
This piece was used at the shrine of the high priest.

In the Yorùbá religion, Sàngó ( also spelled, Sango or Shango, often known as Xangô or Changó in Latin America and the Caribbean, and also known as Jakuta is perhaps one of the most popular Orisha; also known as the divinity of thunder and lightning, Sango is historically a royal ancestor of the Yoruba as was:

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