It is a new detention camp spanning some 60 acres, opened as recently as January. With 13 five-story residential buildings, it can accommodate more than 10,000 people.

The Kashgar site is among dozens of prisonlike detention centers that Chinese authorities have built across the Xinjiang region, according to the Xinjiang Data Project, an initiative of the Australian Strategic Policy Institute (ASPI), despite Beijing’s claims that it is winding down its internationally denounced effort to “reeducate” the Uighur population after deeming the campaign a success.

A recent visit to Xinjiang by The Washington Post and evidence compiled by ASPI, a ­Canberra-based think tank, suggest international pressure and outrage have done little to slow China’s crackdown, which appears to be entering an ominous new phase.

For the past year, the Chinese government has said that almost all the people in its “vocational training program” in Xinjiang, ostensibly aimed at “deradicalizing” the region’s mostly Muslim population, had “graduated” and been released into the community.