Could a space station on the ground in southern Argentina’s Patagonia be a massive spying facility for the Chinese military? No, according to the Chinese government, but evidence suggests otherwise.

The Chinese government insists the station’s sole purpose is the peaceful observation and exploration of space, asserting it played a key role in the landing of a spacecraft on the far side of the moon earlier this year.

However, according to Reuters, which obtained hundreds of pages of Argentinian government documents, the facility might be something more than peaceful. The facility reports to the People’s Liberation Army. It’s also managed by the China Satellite Launch and Tracking Control General (CLTC), which conducts commercial satellite launches and offers satellite tracking control services. The Chinese command structure is the key difference between its space agency and that of other nations. NASA and the European Space Agency (ESA), for instance, are civilian agencies.

Many believe that aside from some innocuous activities, the Patagonia ground station could be used as an eavesdropping outpost to tap into and exploit communications and other sensitive data from other countries’ satellites.