4 ms·
They could be at least 400,000 years old. https://www.uvm.edu/uvmnews/news/secrets-under-ice https://www.uvm.edu/uvmnews/news/secrets-under-ice
by chippy 6y ago
They could be at least 400,000 years old.
https://www.uvm.edu/uvmnews/news/secrets-under-ice https://www.uvm.edu/uvmnews/news/secrets-under-ice