![General view of trench D5, with a close view of the sand with gravels... | Download Scientific Diagram General view of trench D5, with a close view of the sand with gravels... | Download Scientific Diagram](https://www.researchgate.net/publication/321867655/figure/fig3/AS:572542312484868@1513516132651/General-view-of-trench-D5-with-a-close-view-of-the-sand-with-gravels-sample-D5-2.png)
General view of trench D5, with a close view of the sand with gravels... | Download Scientific Diagram
![Photo of ~5 m long trench at Beachlands. Two sand layers, one at ~2.1 m... | Download Scientific Diagram Photo of ~5 m long trench at Beachlands. Two sand layers, one at ~2.1 m... | Download Scientific Diagram](https://www.researchgate.net/publication/279192942/figure/fig3/AS:614222610325507@1523453490618/Photo-of-5-m-long-trench-at-Beachlands-Two-sand-layers-one-at-21-m-below-the-surface.png)
Photo of ~5 m long trench at Beachlands. Two sand layers, one at ~2.1 m... | Download Scientific Diagram
![Reconstructed Trenches Made Using Concrete Moulded Sand Bags At The Canadian National Memorial At Vimy Ridge On A Grey Autumn Day. The Memorial Is For First World War Canadian Dead And Missing Reconstructed Trenches Made Using Concrete Moulded Sand Bags At The Canadian National Memorial At Vimy Ridge On A Grey Autumn Day. The Memorial Is For First World War Canadian Dead And Missing](https://previews.123rf.com/images/johndavidphoto/johndavidphoto1801/johndavidphoto180100031/94390606-reconstructed-trenches-made-using-concrete-moulded-sand-bags-at-the-canadian-national-memorial-at.jpg)
Reconstructed Trenches Made Using Concrete Moulded Sand Bags At The Canadian National Memorial At Vimy Ridge On A Grey Autumn Day. The Memorial Is For First World War Canadian Dead And Missing
![General view of trench D5, with a close view of the sand with gravels... | Download Scientific Diagram General view of trench D5, with a close view of the sand with gravels... | Download Scientific Diagram](https://www.researchgate.net/profile/Krum-Bacvarov/publication/321867655/figure/fig3/AS:572542312484868@1513516132651/General-view-of-trench-D5-with-a-close-view-of-the-sand-with-gravels-sample-D5-2_Q320.jpg)