EarthSculptor is a 3D modelling program that allows you to design the geology of a given place, real or imaginary, thanks to a powerful 3D engine that allows you to shape a defined piece of land. The way you navigate and build mountains on this land is really beautiful. Every movement, zoom in and out or rotation is extremely smooth and well rendered. You'll have to use both keyboard and mouse to fully navigate your creation.
You will probably need some time to learn how to color and apply textures to the forms you have created. As a start, to model hills and mountains, press the wave button with the up and down arrows you find in the toolbar menu on your left. To color them, just press the brush function and choose the tone you want in the palette frame on your right. Also on this side, you find the Terraform and Material controls.
Although EarthSculptor is tricky to learn for newcomers, you can have fun designing the project of your future garden or your ideal resort with this efficient 3D rendering engine.