dissected; narrow coastal plain lies between The Peak and the
coastal cliffs

Saint Kitts and Nevis
volcanic with mountainous interiors

Saint Lucia
volcanic and mountainous with some broad, fertile valleys

Saint Pierre and Miquelon
mostly barren rock

Saint Vincent and the Grenadines
volcanic, mountainous

Samoa
two main islands (Savaii, Upolu) and several smaller islands
and uninhabited islets; narrow coastal plain with volcanic, rocky,
rugged mountains in interior

San Marino
rugged mountains

Sao Tome and Principe
volcanic, mountainous

Saudi Arabia
mostly uninhabited, sandy desert

Senegal
generally low, rolling, plains rising to foothills in
southeast

Serbia
extremely varied; to the north, rich fertile plains; to the
east, limestone ranges and basins; to the southeast, ancient
mountains and hills

Seychelles
Mahe Group is granitic, narrow coastal strip, rocky,
hilly; others are coral, flat, elevated reefs

Sierra Leone
coastal belt of mangrove swamps, wooded hill country,
upland plateau, mountains in east

Singapore
lowland; gently undulating central plateau contains water
catchment area and nature preserve

Slovakia
rugged mountains in the central and northern part and
lowlands in the south

Slovenia
a short coastal strip on the Adriatic, an alpine mountain
region adjacent to Italy and Austria, mixed mountains and valleys
with numerous rivers to the east

Solomon Islands
mostly rugged mountains with some low coral atolls

Somalia
mostly flat to undulating plateau rising to hills in north

South Africa
vast interior plateau rimmed by rugged hills and narrow
coastal plain

South Georgia and the South Sandwich Islands
most of the islands,
rising steeply from the sea, are rugged and mountainous; South
Georgia is largely barren and has steep, glacier-covered mountains;
the South Sandwich Islands are of volcanic origin with some active
volcanoes

Southern Ocean
the Southern Ocean is deep, 4,000 to 5,000 meters
over most of its extent with only limited areas of shallow water;
the Antarctic continental shelf is generally narrow and unusually
deep, its edge lying at depths of 400 to 800 meters (the global mean
is 133 meters); the Antarctic icepack grows from an average minimum
of 2.6 million square kilometers in March to about 18.8 million
square kilometers in September, better than a s