The LEK Lunar Expeditionary Complex was a lunar expedition and Moon base proposed by Valentin Glushko in 1974 as a Soviet response to the United States' Apollo program and as a successor to the Zvezda moonbase, which was based on the cancelled N1-L3 crewed Moon expedition program.
If implemented, it was intended to have been operational by 1980 and used for scientific and engineering research.
The Vulkan-LEK project was based on new superheavy launcher developed in Glushko's bureau.
The moonbase design consisted of a number of modules, including: The project was cancelled in 1976 when a Russian Academy of Sciences Commission ruled that resources should be targeted toward projects primarily adding economic value rather than for national prestige.
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