 Item Number – SCP-210 – Object Class – SAFE Special Containment Procedures – The property containing SCP-210 has been designated as SITEMENT. The primary responsibility of guards on said site is to prevent entry by trespassers and maintain the cover story detailed in Document 210-1. The servants' quarters adjacent to SCP-210 have been deemed safe for human habitation and may be used for on-site housing. A remotely controlled vehicle is to be sent into SCP-210 on a monthly basis to catalog any changes. Description – SCP-210 is a two-story mansion, flooded to a depth of 4.35 meters with an unknown fluid substance. The substance, designated SCP-210-1, possesses a refractive index nearly identical to water. This fluid is invisible from the outside of SCP-210 and does not flow out of SCP-210 if a door or window is opened. Any living creature that comes into contact with SCP-210-1 enters a sleep-like state and begins drifting through SCP-210-1 as if neutrally buoyant. Beings trapped in this manner are designated SCP-210-2 to date. Instances of SCP-210-2 have been cataloged by remote means. Instances of SCP-210-2 emit a constant stream of bubbles as if exhaling, despite no source of air being identified and subjects appearing to breathe as normal. Subjects have been noted to move through SCP-210-1 slowly as if dancing. It has not been determined if this is under the power of the subjects or of micro-occurrence within SCP-210-1. SCP-210 came to the attention of the Foundation when an agent embedded in the County Police Department received a number of related missing persons reports. General Task Force Iota 12, Damn Feds, was dispatched to intercept the investigations. The disappearances were quickly traced to a party held at SCP-210 in 2001 with several subsequent disappearances resulting from persons undergoing private investigations. Two team members were lost on initial contact with SCP-210, the first one entering through the front door and the second while attempting to recover the first. The full documentation of this investigation can be found in Document 210-1. Addendum 210-1 Attempts to remove SCP-210-2 from SCP-210-1 have failed, as instances of SCP-210-2 which reach the edge of SCP-210-1 will not travel any further. Examples of SCP-210-2 cannot be damaged. This property extends to clothing evidenced by remote attempts to harvest sample material. Furniture and other inanimate objects within SCP-210-1 behave as if in normal atmospheric conditions and may be removed from the residence. Removed items show no anomalies. On 210-2, the remote observation of SCP-210 in 2001 was unable to locate SCP-210-2-7. Note, we have been completely unable to locate SCP-210-7 on subsequent observations. A request has been placed for tracking devices in case of further disappearances. Researcher B. Lesson complete. If you missed the previous orientation, go watch SCP-209, the sadist's tumbler, right now. Or for the complete course, watch this playlist.