Original: Tirich Mir (alternatively Terich Mir and Terichmir) is the highest mountain in the Hindu Kush region of northern Pakistan, and the highest mountain indisputably in Pakistan (several peaks higher than Tirich Mir are in Northern Areas, which Pakistan administers but of which possession is contested by India).
Simplified: Tirich Mir (also called Terich Mir and Terichmir') is the highest mountain in the Hindu Kush region of northern Pakistan.