The Klastline Plateau is a plateau

Plateau

In geology and earth science, a plateau , also called a high plain or tableland, is an area of highland, usually consisting of relatively flat terrain. A highly eroded plateau is called a dissected plateau...

 in the Stikine Country

Stikine Country

The Stikine Country, also referred to as the Stikine District or simply "the Stikine" , is one of the historical geographic regions of the Canadian province of British Columbia, located inland from the central Alaska Panhandle and comprising the basin of the Stikine River and its tributaries...

 of the Northern Interior of British Columbia

British Columbia Interior

The British Columbia Interior or BC Interior or Interior of British Columbia, usually referred to only as the Interior, is one of the three main regions of the Canadian province of British Columbia, the other two being the Lower Mainland, which comprises the overlapping areas of Greater Vancouver...

, Canada

Canada

Canada is a North American country consisting of ten provinces and three territories. Located in the northern part of the continent, it extends from the Atlantic Ocean in the east to the Pacific Ocean in the west, and northward into the Arctic Ocean...

. A subplateau of the Stikine Plateau

Stikine Plateau

The Stikine Plateau is a plateau in northern British Columbia, Canada. It lies between the Boundary Ranges of the Coast Mountains on the west and southwest and the Cassiar Mountains along its northeast, and between the Skeena Mountains on its south and southeast and the Jennings and Nakina Rivers...

, it is located between the Stikine River

Stikine River

The Stikine River is a river, historically also the Stickeen River, approximately 610 km long, in northwestern British Columbia in Canada and southeastern Alaska in the United States...

 (N), the upper Iskut River

Iskut River

The Iskut River is the largest tributary of the Stikine River in northwestern British Columbia, Canada, entering it a few miles above its entry into Alaska....

 (S), Mess Creek (W) and the Klappan River

Klappan River

The Klappan River is a major tributary of the Stikine River in northwestern British Columbia, Canada. It flows north from an area known as the Sacred Headwaters, which is the source not only of this river but also of the Nass, Skeena, Spatsizi and Stikine Rivers...

 (E). The Skeena Mountains

Skeena Mountains

The Skeena Mountains, also known as the Skeenas, are a subrange of the Interior Mountains of northern British Columbia, Canada, essentially flanking the upper basin of the Skeena River. They lie just inland from the southern end of the Boundary Ranges of the Coast Mountains, and also of the...

 are to the south, the Tahltan Highland

Tahltan Highland

The Tahltan Highland is an upland area of plateau and relatively lower mountain ranges in British Columbia, Canada, lying east of the Boundary Ranges and south of the Inklin River...

 to the west, the Spatsizi Plateau

Spatsizi Plateau

The Spatsizi Plateau is a plateau in the upper basin of the Stikine River in north-central British Columbia, Canada. Most of the plateau, which is a sub-plateau of the Stikine Plateau, is enshrined in either Spatsizi Plateau Wilderness Provincial Park or Spatsizi Headwaters Provincial Park...

 to the east, and the Tanzilla Plateau

Tanzilla Plateau

The Tanzilla Plateau is a plateau in the Stikine Country of the Northern Interior of British Columbia, Canada. It is a sub-plateau of the Stikine Plateau and is located east of the Tuya River, north of the Stikine River and surrounding Dease Lake; its eastern extremity verges on the Stikine Ranges...

to the north, on the other side of the Stikine. The Spatsizi and Tanzilla Plateaus, and the Tahltan Highland, are also part of the Stikine Plateau.