Inside a circular concrete drainage culvert with a trickle of water
Schlüsselwörter
culvert,
circular,
inside,
drainage,
concrete,
water,
outlet,
inlet,
flow,
road,
construction,
gravity,
tunnel,
pipe,
building,
ditch,
drain,
highway,
hydraulic,
hydrology,
overflow,
pipeline,
road construction,
road construction,
tube,
skittish,
dark,
service
Deutsch
