rectangular hole in the ground, lined with concrete blocks

rectangular hole in the ground, lined with concrete blocks. The hole is filled with a grid of wooden planks and metal mesh, with a layer of blue and white tiles on one side. The surrounding ground is brown dirt. The hole appears to be a foundation for a structure. The image was taken at the location in Ibaoko, Nigeria with coordinates (latitude: 6.937, longitude: 6.742). No people are visible in the image.