bats under the bridge
a broad vault but too low
to skirt its flowing floor
by weed-cramped margins
awareness of great weight
above the suspended stones
unhomely cut short shelter
damp through-draught echoes
a paradise of reverse
for night-bats that seek shadow
a shallow arch cavern-heavy
but dusk rising they flit
nervous circuits and crimp
by lamplight circumference
incarnate the jagged quests
their wings were leathered about
Martin Potter (https://martinpotterpoet.