This was during the end of the last ice age.

Many animals died out at the end of the last ice age.

They were formed at the end of the last ice age about 10,000 years ago.

This was formed after the end of the last ice age some 12,000 years ago.

It is thought to be over 6000 years old dating from the end of the last ice age.

The area has been inhabited since the end of the ice age.

It was formed as sea levels rose at the end of the last ice age.

The end of the ice age was also a huge reason they became extinct.

This lake existed up to 11,000 years ago at the end of the most recent ice age.

For example, they point out, the average temperature since the end of the last ice age has increased by nine degrees.