Related Clues:

• Opposite of valleys
• Highest peaks
• Peeks
• Most of Wile E. Coyote's gadgets, brand-wise
• Reaches the maximum
• Tip tops
• High points of meringue
• Whitney and Rainier
• Highest heights
• Reaches a climax
• Reaches its highest point
• Pinnacles (literal or not)
• Mountains of nettles picked up
• Highest levels of development
• Has nowhere to go but down