Can you use lasers to identify how old the ice on mountains is?

Question: Can you use lasers to identify how old the ice on mountains is?
- Keywords:
  ice,
  laser
Asked by anon-277283 to Liam on 20 Jan 2021. This question was also asked by anon-278171.
- Liam Taylor answered on 20 Jan 2021:
  
  Kind of, yes! There are radar sensors that can look underneath the ice and see all of the individual layers that make up the ice. Have you ever seen tree rings, where you can count back how old a tree is by each ring? Ice is sort of the same! You get layers that you can count back to see how old it is!

Question: Can you use lasers to identify how old the ice on mountains is?