Assertion: boomerang | /r/MadeOf | mammoth tusk
Facets:
Source sentences:
text: The oldest boomerang yet, 23,000 years, was made from a mammoth tusk and discovered in a cave in Poland (Nature, DOI: 10.1038/329436a0).
text: One boomerang that was discovered in Obłazowa Cave in the Carpathian Mountains in Poland was made of mammoth's tusk and is believed, based on AMS dating of objects found with it, to be about 30,000 years old.
text: The oldest boomerang yet, 23,000 years, was made from a mammoth tusk and discovered in a cave in Poland (Nature, DOI: 10.1038/329436a0).
text: One boomerang that was discovered in Jaskinia Obłazowa in the Carpathian Mountains in Poland was made of mammoth's tusk and is believed, based on AMS dating of objects found with it, to be about 30,000 years old.