construction cranes on the gigerwald or concrete dam on the reservoir lake gigerwaldsee gigerwald lake - switzerland

activity apartment architecture arena build builder building built business cement concept concrete construction contractor cranes dam development engineer engineering equipment estate excavator flat frame gigerwald gigerwaldsee ground growth heavy helmet heritage high industrial industry infrastructure job lake machine machinery maintenance metal modern new occupation professional project reservoir safety sardona scaffolding schweiz site skyscraper steel structure switzerland team teamwork technology tectonic tower unesco urban wall work world