4 Pics 1 Word Level 136

Answer:
Stack
Hint
What is the answer to the 4 Pics 1 Word level with Pile of rocks, Father and son playing jenga, Girl holding pile of books, and Smoke stacks?

Hint
What is the answer to the 4 Pics 1 Word level with Pile of rocks, Father and son playing jenga, Girl holding pile of books, and Smoke stacks?