NASA | Greenland's Mega Canyon
Why the open web links it
A newly discovered 460-mile-long canyon beneath Greenland's ice is revealed using NASA radar data.
Linked by 9 independent sites, 2 of them widely read in the 2026-10 crawl of the open web, including nasa.gov, activeboard.com, science20.com, wvxu.org, listelist.com.