What is the geography of Costa Rica like?

Costa Rica is a mountainous country located between the Caribbean Sea and Pacific Ocean.  The coastal areas are made up of beaches and mangroves.  As you move further inland, it becomes mountainous as the Talamanca Mountain Range divides the country.  These mountains average a few thousand feet in elevation, though some peaks are much higher.  The higher altitude mountains often ascend into the clouds, creating cloud forest habitat.  The tallest peak in Costa Rica is Cerro Chirripo, which is 12,000 feet high.  Costa Rica is also home to many volcanoes, but only five are considered active.  There are many streams, rivers and waterfalls, but only a couple lakes.  Lake Arenal is the largest in the country and located in front of the iconic volcano.