In the 8th century BCE, the Assyrians destroyed the northern kingdom of Israel and sent its population into exile, while the Judean kingdom in the south—from whose population modern Jews are descended—remained intact for two more centuries. The Talmud mentions that the lost tribes of the former kingdom reside somewhere beyond the mythical river Sambatyon, which does not flow on Shabbat. In conversation with Nachi Weinstein, Daniel Stein-Kokin explains the various legends that have emerged regarding this miraculous body of water, and their significance to Jews and non-Jews alike. (Audio, 94 minutes.)
Read more on Seforim Chatter: https://seforimchatter.com/2023/12/31/tlt-series-epiosde-3-dr-daniel-stein-kokin-the-legendary-sambatyon-river/