The image is a black and white illustration depicting a lunar eruption with feeble action. It's a cross-section view, showing the interior of a lunar feature. The top portion shows a crater-like depression with a plume of ejected material rising from it. The plume is depicted as a dense collection of dots, suggesting particles being thrown upwards. Below the surface, the illustration shows a complex network of layers and formations, with a central conduit or vent from which the eruption originates. The surrounding area is filled with diagonal lines, representing the lunar surface or terrain. The style is reminiscent of a scientific illustration from the late 19th or early 20th century, with detailed linework and a focus on geological features. The caption at the bottom reads 'LUNAR ERUPTION—FEEBLE ACTION.'