How to draw dug land
In this tutorial you are going to make a dug land which looks as it is effected by the earthquake.
Take Picture: Capture any land picture.
Selection: Choose Polygonal lasso tool (M key)
and make a selection as looking down.
Fill Color: After Selection press Ctr + J, you will get your selected area on the new layer. Choose "456848" Color and Paint bucket tool (G key) and fill in the selection as I have done here.
Effects: Now give effects go to Layer Menu > Layer Style > Inner Shadow, Inner Glow use both settings.
Blending Options: Now write click on the layer to modified and choose "Blending Option" then use settings.
Shape Blur: Go to Filter menu > Blur > Shape blur and use settings.
This is your final dug land.