The origins of the people of Tuvalu are addressed in the theories regarding migration into the Pacific that began about 3000 years ago. During pre-European-contact times there was frequent canoe voyaging between the nearer islands including Samoa and Tonga. Eight of the nine islands of Tuvalu were inhabited; thus the name, Tuvalu, means "eight standing together" in Tuvaluan (compare to *walo meaning "eight" in Proto-Austronesian). Possible evidence of fire in the Caves of Nanumanga may indicate human occupation for thousands of years.