Per 
Item #: SCP-3446
Object Class: Keter
Special Containment Procedures: SCP-3446 is to be contained on a table, surrounded by an iron 5 x 3 cage at Site 19. No personnel, even one with the highest rank, is allowed in SCP-3446's chamber. Only if it's a test then SCP-3447 is allowed outside containment.
Description: SCP-3447 appears to be an ordinary watermelon. if anything makes contact with SCP-3446 it Will cause [REDACTED], Severely wounding organic matter. The same rule applies to all matter except iron.
If any damage is done to SCP-3446 it will cause an explosion, destroying all organic matter in a 3-kilometer radius. After this event occurs SCP-3446 will reappear in a random location in a 1-kilometer radius.
Addendum-3667:SCP-3667 was found in a farmhouse in ██████, Texas. Every organism near the farmhouse looked obliterated, as if they were near an explosion. SCP-3446 was found on the kitchen counter.
