SILETZ, Ore. — Local native languages teeter on the brink of oblivion all over the world as the big linguistic sweepstakes winners like English, Spanish or Mandarin ride a surging wave of global communications.

But the forces that are helping to flatten the landscape are also creating new ways to save its hidden, cloistered corners, as in the unlikely survival of Siletz Dee-ni. An American Indian language with only about five speakers left — once dominant in this part of the West, then relegated to near extinction — has, since earlier this year, been shouting back to the world: Hey, we’re talking. (In Siletz that would be naa-ch’aa-ghit-’a.)

“We don’t know where it’s going to go,” said Bud Lane, a tribe member who has been working on the online Siletz Dee-ni Talking Dictionary for nearly seven years, and recorded almost all of its 10,000-odd audio entries himself. In its first years the dictionary was password protected, intended for tribe members.

Since February, however, when organizers began to publicize its existence, Web hits have spiked from places where languages related to Siletz are spoken, a broad area of the West on through Canada and into Alaska. That is the heartland of the Athabascan family of languages, which also includes Navajo. And there has been a flurry of interest from Web users in Italy, Switzerland and Poland, where the dark, rainy woods of the Pacific Northwest, at least in terms of language connections, might as well be the moon.