Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Hawaii Volcanoes National Park' has mentioned 'Lava tube' in the following places:
Occurrence Sentence Text Source
An easily accessible lava tube was named for the Thurston family.
An undeveloped stretch of the Thurston Lava Tube extends an additional 1,100xc2xa0ft (340xc2xa0m) beyond the developed area and dead-ends into the hillside, but it is closed to the general public.
Thurston lava tube in Hawaixcaxbbi Volcanoes National Park
[4] The Thurston Lava Tube (Nxc4x81huku) was reopened to the public on February 21, 2020.