The Pampa biome in South Brazil extends from Rio Grande do Sul on the Atlantic Ocean to the West. The region is peppered with finger lakes and fertile lowlands. These plains contain unique wildlife because of the different terrains around it. The dominant vegetation types are grassy prairie and grass steppe. Winters are cool to mild and summers are very warm and humid. Rainfall is fairly uniform throughout the year but is a little heavier during the summer. Annual rainfall is heaviest near the coast and decreases gradually further inland. Rain during the late spring and summer usually arrives in the form of brief heavy showers and thunderstorms.