This General Report reviews the topic of Selection of Parameters, Modelling and Unsaturated Hard Soils – Weak Rocks based on the papers submitted to the 15th European Conference on Soil Mechanics and Geotechnical Engineering, Athens, Greece. The papers provide a useful snapshot of the current state-of-the-art. The international geotechnical community is making good progress in addressing parameter selection, from in situ testing, laboratory testing and microscopy, but there is still much work to be done before we can provide robust parameter sets. Numerical model development is progressing well and cemented soil/rock models in particular show real promise in capturing the behaviour of structured soils. While unsaturated behaviour of hard soils – soft rocks is now starting to be considered, it is still not the commonplace and needs to be recognised more widely.