Complex sentence: Tekezé Dam is a double-curvature arch dam in the Tigray region of northern Ethiopia on the Tekezé River, a Nile tributary that flows through one of the deepest canyons in the world.
Split into simpler sentences: Tekezé Dam is a double-curvature arch dam in the northern Tigray region of Ethiopia. It is situated on the Tekezé River, a Nile tributary that flows through one of the deepest canyons in the world.