Description: SCP-087 is an unlit platform staircase. Stairs descend on a 38 degree angle for 13 steps before reaching a semicircular platform of approximately 3 meters in diameter. Descent direction rotates 180 degrees at each platform. The design of SCP-087 limits subjects to a visual range of approximately 1.5 flights. A light source is required for any subjects exploring SCP-087, as there are no lighting fixtures or windows present. Lighting sources brighter than 75 watts have shown to be ineffective, as SCP-087 seems to absorb excess light.
Subjects report and audio recordings confirm the distressed vocalizations from what is presumed to be a child between the ages of █ and ██. The source of the distress calls is estimated to be located approximately 200 meters below the initial platform. However, any attempts to descend the staircase have failed to bring subjects closer to the source. The depth of descent calculated from Exploration IV, the longest exploration, is shown to be far beyond both the possible structure of both the building and geological surroundings. At this time, it is unknown if SCP-087 has an endpoint.