Pokemon Pearl is set in the fictional region of Sinnoh. Sinnoh is not directly connected to any other Pokémon region. It is characterized by large, snow-covered mountains; Mt. Coronet, a part of a mountain range, divides Sinnoh in half. Unlike previous regions, Sinnoh has a "northern" feel to it because it is the first region with snow-covered routes.  Sinnoh is also characterized by its waterways with three main lakes, Verity, Acuity, and Valor, that form a triangle. Unlike the Hoene region, however, which is mostly water routes, only 30 percent of Sinnoh's landscape comprises waterways. Underneath Sinnoh's surface is the Sinnoh Underground, which is a large maze of caves and tunnels.