ARGE cave.
3 lines of the survexfile, then all the *begin lines:
*begin 46
*begin 46a-Eingangshalle
*begin 1
*begin 10
*begin 2
*begin 4
*begin 5
*begin 6
*begin 7
*begin 8
*begin 9
*begin Aussenzug
*begin 1
*begin 2
*begin Ebenseer_Schacht
*begin 1
*begin 2
*begin 3
*begin 4
*begin 5
*begin 6
*begin Eingang-Mausloch-46b
*begin 1
*begin 10
*begin 11
*begin 12
*begin 13
*begin 14
*begin 15
*begin 16
*begin 17
*begin 18
*begin 19
*begin 2
*begin 20
*begin 21
*begin 22
*begin 23
*begin 24
*begin 25
*begin 26
*begin 27
*begin 28
*begin 29
*begin 3
*begin 30
*begin 31
*begin 32
*begin 4
*begin 5
*begin 6
*begin 7
*begin 8
*begin 9
*begin Neue_Plagitzerhoehle_Eing
*begin 46d_46e
*begin 1
*begin 2
*begin 3
*begin 4