Translate "those high mountains" into Arabic, knowing that الْجِبَالُ, 'the mountains,' is a non-rational plural:

Rules and Practical Exercises for Demonstrative Phrases

• تِلْكَ الْجِبَالُ الْعَالِيَةُ
• أُولٰئِكَ الْجِبَالُ الْعَالِيَةُ
• تِلْكَ الْجِبَالُ الْعَالِيُّ