This image captures an outdoor scene in Okene, Nigeria, depicting two adult males engaged in a manual cleaning operation within a concrete pit or tank

This image captures an outdoor scene in Okene, Nigeria, depicting two adult males engaged in a manual cleaning operation within a concrete pit or tank. The rectangular concrete structure, approximately knee-deep, is partially filled with dark, murky liquid and sediment. Its interior walls exhibit greenish-brown staining. Spanning the pit horizontally are two wooden beams, which support a large, light-blue plastic tank or filter component, partially visible at the top. A light green PVC pipe extends into the pit from the left side. The ground surrounding the pit appears to be dirt with sparse vegetation. On the left side of the pit, an adult male, with a beard and mustache, stands in the dark liquid. He wears a white sleeveless undershirt, dark blue jeans, and dark protective boots. Both hands are covered with red protective gloves, and he is looking intently towards his left. A black bucket is visible near his feet in the liquid. On the right side of the pit, a second adult male is actively bending forward, working in the dark liquid. He is dressed in a green and white horizontally striped t-shirt, dark blue jeans, dark protective boots, and a dark baseball cap. He also wears red protective gloves. This individual is using a red plastic dustpan or scoop to transfer the dark liquid and sediment into a black bucket positioned directly in front of him within the pit. A bare arm and hand, belonging to a third, unidentifiable individual, are partially visible on the far left, resting on the concrete edge outside the pit. Additionally, a bright green plastic bucket and another dark bucket are situated on the ground outside the pit, in the lower left foreground.