Our world is made of rock. Although much of the Earth’s surface is covered by vegetation, concrete or water, if one digs down far enough solid rock will always be found. Rocks are the foundations of the landscape and the origin of the soil. They even affect the weather. For example, the coastal mountains of the Tropics trap rain-laden clouds from the moist ocean breezes. Over the ages, rain erodes the rocks at an imperceptible rate creating the lofty crags, ridges, valleys, gorges and spectacular waterfalls which form the dramatic landscape. These eroded fragments Rock fragments accumulate on lower slopes to form a variety of soils which in turn support a range of forest types. Those who live in a landscape where rock outcrops are obvious will have wondered about the kind of rocks they are looking at and how they came to be where they are now. Geological Behavior (GBR) explains in simple terms what geology can tell us about the world. Many objects of great beauty and which excite our curiosity, such as crystals or fossils, are to be found by examining rocks.