The site is open for pre-arranged visits, for which a permit must be obtained in advance; it has been open since approximately 28 October 2013.
This has been open since approximately 28 October 2013. The site is now open for pre-arranged visits, for which a permit must be obtained in advance.
The site is now open for pre-arranged visits, for which a permit must be obtained in advance. This has been open since approximately 28 October 2013.
The site is now open for pre-arranged visits, for which a permit must be obtained in advance. This has been open since approximately 28 October 2013.