| 1 | That's because trees create a new ring each year. | |
| 2 | We can compare the charcoal and tree-ring fire records. | |
| 3 | We'd shared so much over the years, like rings on a tree. | |
| 4 | But the rings were very small, showing that the trees grew extremely slowly. | |
| 5 | They sit cross legged, in concentric circles... like growth rings in a tree. |