Field guide No. 1573

Around a storm drain in a car park, the tarmac has risen in concentric rings like the ripples from a dropped stone. Someone will need to resurface the splash.

High water mark

Ripples that set overnight

Around a storm drain in a car park, the tarmac has risen in concentric rings like the ripples from a dropped stone. Someone will need to resurface the splash.

Field noteAsphalt sets flat, but around this drain it froze in rings like a dropped pebble.

Specimen
No. 1573
Kind
Possible (the golden mountain kind)
Breaks
Material
Where it doesn’t exist
A car park drain where the tarmac rippled
Nearest existing relative
A storm drain
Filed in Fresh slop as
Objects

Also possible, also breaking material