High resolution hybrid seismic mapping of the bedrock surface and overburden structures for the construction of the portal of road tunnel in an alpine valley; 6 profiles totalling 800 m; depth of investigation 30 m.
| Category | Engineering geology |
| Country | Switzerland |
| Project period | Oct - Nov 2009 |
| Number of lines | 6 |
| Total length (m) | 800 |
| Depth (m) | 30 |