A lost race in Panama and some man-eating trees show up in this Amazing Stories tale from 1926, written by traveller and finder of Lost Worlds in fact and fiction, A. Hyatt Verrill!
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<a href="https://archive.org/details/AmazingStoriesVolume01Number09/page/n37/mode/2up" target="_blank" rel="noopener noreferer">Read the story here</a>

The Lost White Tribe (with Michael Robinson)

Wide Atlantic Weird: an Irish podcast about why people believe weird things. Now defunct, enjoy these episodes of investigating the world of the strange, remaining critical, not cynical. And enjoy the final episodes under the guise of the Lost Valley podcast too!