Satellite imagery has reportedly revealed a secret, active facility in Iran dedicated to advanced rocket engines and rocket fuel. Analysis of this imagery by researchers at the Middlebury Institute of International Studies suggests that the facility, named Shahrud, may be developing long range missiles or satellite launch vehicles. Ground scars at the site suggest that an engine with between 62 and 93 tons of thrust was tested in 2017. In addition, Shahrud appears to house three pits used for casting or curing rocket components, reportedly enabling the production of three rockets annually. A lack of storage tanks, fuel trucks, or fueling stations on the premises, researchers said, suggests that Shahrud is building engines powered by solid fuel.