Père-Lachaise and la petit ceinture

What's curious about this map from an old Baedeker guide to Paris (1904) is right there in the upper left-hand corner: those dotted lines that outline the tunnel for the long-gone Chemin de fer de Ceinture, the small underground railway that once linked now-defunct intra-city train stations and served as a means of resupplying the old fortifications.

My question is: Was the tunnel the reason why D83 was never used for burials but only as a maintenance facility?

Thanks to Marie B. we have the answer: the tunnel collapsed in 1874 destroying all the graves in that division and the space was never reused.

1904_plan_PL.jpg

Anyway, the map shows the tunnel running between the Menilmontant and Charonne passenger stations. While the stations are long gone and the tunnel no longer is used parts of it still exists, such as the old Charonne station converted into a cafe:

Charonne_convertie en café %22La Flèche d'Or.jpeg

. . . or near the Parc Montsouris:

Ligne_Petite_Ceinture_parc_Montsouris_Paris.jpg