Thanks to a special structure in a 63-metre wide shaft 55 metres below the Gustave Roussy Institute, the tunnel boring machine 'Allison; boring the line 14 South crossed over the future Line 15.  Thanks to this, Allison can continue moving towards the Maison-Blanche station.

http://home.nestor.minsk.by/build/news/2020/01/2402.html