Sunday Stills: Borneo's vast underworld, microscopic creatures come to life, and more

Plus: A photographer explores the living legacy of the Underground Railroad [Watch: The genesis of a salamander]( [VIEW ONLINE]( [Watch: The genesis of a salamander]( [National Geographic]( Issue 142 [S U N D A Y S T I L L S]( March 10, 2019 . Photograph by Carsten Peter [Magazine]( [Borneo's vast underworld]( Beneath the island’s rainforest, explorers search for new discoveries deep within some of the Earth’s largest, longest, and wildest caves. [See the pictures]( SHARE [F]( [T]( . Photograph by Jannicke Wiik-Nielsen [Science]( [Hidden microscopic worlds]( Magnified about a hundred times, a mealworm goes from gross to gregarious as part of a series of unusual portraits by Jannicke Wiik-Nielsen. [See the pictures]( SHARE [F]( [T]( . Photograph by Moises Saman [Magazine]( [No way out]( As migrants flee the decimated Central American nation of El Salvador, changes in the United States could send thousands back into the chaos. [See the Pictures]( SHARE [F]( . . Photograph by Nicola Lo Calzo [Culture]( [The Underground Railroad’s ‘great central depot’]( From Harriet Tubman to Gerrit Smith, abolitionists in central New York ushered thousands of escaped slaves to freedom. Photographer Nicola Lo Calzo explores the living legacy of this clandestine network. [See the Pictures]( SHARE [F]( [T]( . [Selfies on Assignment]( Lucas Foglia snapped this selfie on assignment in California's Central Valley for an upcoming story about bee thievery: "At the time of this photo, I was following a bee fly from flower to flower in a seemingly endless field of blooming almond trees." [See more selfies]( SHARE [F]( [T]( . . CELEBRATING [100M EVERYDAY EXPLORERS]( Join our 100 million followers on Instagram and be a part of a community that cherishes the beauty and mystery of our world. [Follow @natgeo]( [Email Icon]( [Sign up for more National Geographic newsletters]( [Shop]( [Donate]( [Subscribe]( [Travel]( [READ OUR LATEST STORIES]( [SHOP]( [DONATE]( [SUBSCRIBE]( [TRAVEL]( [FB]( [Twitter]( [IG]( You are receiving this email because you elected to receive marketing communications from National Geographic under the terms of our [Privacy Policy](. Click here to [unsubscribe.]( If you reside in the EU/European Economic Area and wish to exercise all other data subject rights, [click here](. National Geographic | 1145 17th Street N.W. | Washington, D.C. 20036 Copyright © 2019 National Geographic Partners, LLC. All rights reserved.