![Top curves](../../../../jsp/jahia/templates/GSL/gsl_templates/img/keystage3/main_top_grad.gif)
By Gravity
![Examples in photos are from locations on map](../../../../webdav/site/GSL/shared/images/education_and_careers/RockCycle/Processes/Erosion/Earth%20Map1.jpg)
Mass-wasting is often aided by water, so landslides and mudflows frequently occur after heavy rain.
Examples in photos are from locations on map.
Soil Creep
![Copyright Ian Alexander 2007 www.easyweb.easynet.co.uk/~iany/patterns/patterns.htm](../../../../webdav/site/GSL/shared/images/education_and_careers/RockCycle/Processes/Erosion/Soft%20Creep1.jpg)
Copyright Ian Alexander 2007 www.easyweb.easynet.co.uk/~iany/patterns/patterns.htm
Soil creep is slow – a few cm per year. Fences & walls lean over but trees bend as they grow. Grassland develops terracettes.Landslips
![Landslips](../../../../webdav/site/GSL/shared/images/education_and_careers/RockCycle/Processes/Erosion/Landslips1.jpg)
Rock-falls
![Rock Falls](../../../../webdav/site/GSL/shared/images/education_and_careers/RockCycle/Processes/Erosion/Rock%20Falls.jpg)
Mudflows
![Ian West, Geology of the Wessex coast: www.soton.ac.uk](../../../../webdav/site/GSL/shared/images/education_and_careers/RockCycle/Processes/Erosion/Mudflows.jpg)
Ian West, Geology of the Wessex coast: www.soton.ac.uk
Mudflows take place after heavy rain has weakened soft clay or mudstone.Mudflows of volcanic ash are called Lahars.
![Bottom curves](../../../../jsp/jahia/templates/GSL/gsl_templates/img/keystage3/bottom_curve.gif)