Tunnel Cave Drawing Software

Tunnel enables you to draw cave surveys based on Survex-compatible centreline data. Drawings will be adjusted to fit if the underlying data moves due to loop closures. Original drawings/scans/pockettopo imports can be used as a basis to draw over. Complex multi-layered surveys can be drawn, with flexible facilties for colour-grouping and adding images or background maps. The application can use data stored online and works on all major platforms.