Field guide No. 1609
Root cause
What the shadow was hiding.
A tree’s branch shadow falls across asphalt and into a wide puddle. Under the water the shadow carries on as a full spread of roots.
Field noteBranch shadow turning to roots where it meets water, the tree’s underside drawn in the puddle.
Also possible, also breaking physics
Umbrella carves a calm desert tunnelUmbrellas keep weather off. Keeping off a sandstorm for a hundred yards is only a very good umbrella.
Folded pool, level waterThe tiled pool bends into a saddle while its water lies flat. The architect likes the geometry, little else.
Vertical sand tideDry sand slumps at about thirty degrees, so a sheer dune face needs gravity pointing somewhere else.
Chanterelle gills become waterfallsGills drop spores, quietly. Pouring water in falls is a spring’s job.