The first chakra is located at the base of the spine.

Muladhara Chakra
Chakras are an abstract idea perceived by ancient yogis that can be thought of as “ports of entry or ports of exit” for energy within our bodies – sites were we receive, assimilate, and express our vital life energies. These ports of entry or exit are thought of as spinning “wheels” or vortexes of energy, thus Chakra being the Sanskrit word for wheel.
Muladhara chakra, symbolized by a coiled snake, is centered at the perineum and the base of the spine where kundalini energy resides. It relates to our most basic survival needs and our sense of belonging and represents physical and emotional grounding. When this chakra is clear and energy flows through it freely, we feel grounded, centered, and secure, as well as independent, confident, and trusting. We have plenty of physical energy and vitality.