The Arch of Kamandjan is a natural structure of cultural value located in the village of Siby in the Koulikoro Region, Mali. The site consists of a sandstone massif that served as a protective wall for the village of Siby throughout history.
It is historically linked to the legendary Epic of Sundiata, an epic poem of the Mandinka people that tells the story of Sundiata Keita, the founder of the Mali Empire in the 13th century AD. Legend has it that the king of Siby Kamandjan Camara pierced the mountain with his sword to make this rock arch.
In general, the Kamandjan Arch consists of several picturesque geological, physical and biological formations associated with the cultural beliefs and practices of the Mandé Peoples.

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The Arch of Kamandjan was submitted in 2018 to the UNESCO Tentative List in Mali as part of The Mandé Historic Sites and Cultural Landscapes.