Name: Risca
Feature type: name, no symbol
Segment grid: 4C4
Onward stretches:
- XVIII (18) Avitta
- The start of this stretch is not marked.
- The meaning of the second distance figure (X) placed at the end of this stretch is unclear. To judge by BAtlas 32 E4, it seems improbable that a name has dropped out which called for an extra stretch between Risca and Avitta (note that the lithograph in ItMiller 887 erroneously adds a chicane to the Risca stretch). It seems most likely that the distance figure X was originally placed a little higher, and was attached to a stretch (now omitted) linking either THVRRIS and Avitta, or Risca and Sicilibba. On the ground, the figure would not be accurate, but either route still seems possible in principle. I illustrate missing linework for the second alternative, but this choice is made purely in order to create an illustration. In either case, THVRRIS or Sicilibba would become a crossroads lacking a symbol.
- X (10) Sicilibba
- The linework for this stretch is not marked.
- See note under Risca-Avitta stretch.