Use "heap of rubble" in a sentence

1. It was difficult to conceptualize that only a few hours ago this had been a busy gas station, part of the vibrant economy of the city, though now it had been reduced to a smoldering heap of rubble

2. Entire PM House was reduced to heap of rubbles within few moments

3. There was nothing left there except the heap of rubbles

4. Darek climbed the heap of rubble and scrambled to toss aside the smaller rocks that were in his way

5. Sorren jumped out of a heap of rubble and dusted himself off

6. Turning away from the heap of rubble, he found another shaft leading down