Pore Structure of mature beefsteak fungus (Fistulina hepatica) from a huge old oak in Dubki Park. In the close-up of the underside, one can see that the tubes are separate from one another (like packed straws) rather than fused into a solid sponge. Sestroretsk near St.Petersburg, Russia
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Thu 9 Oct 2025 12:38:35 - Exposure: 1.3 sec - Aperture: F/32. - Focal length: 100 mm - ISO 200
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Album 3764: Saint Petersburg - Sestroretsk, Russia, October 9, 2025
