Answer:
When young I am sweet in the sun. When middle-aged I make you gay. When old I am valued more than ever.
I hide in a dark tunnel awaiting my time. I can only be released by pulling back. Once released I may do unstoppable damage.
Weight in my belly, trees on my back, nails in my ribs, feet I do lack. What am I?
I build up castles. I tear down mountains. I make some men blind, I help others to see. What am I?
I am a million peopleβs wakeup call
What is the middle of water but is not an island?