Unsmooth grassy surface

Outdoor areas which are accessible for disabled

Wood chips

Undefined surface

Slippery trail

Aqueduct - A ditch or a chute to divert water

Bridge - A structure that carries a path/trail/road across a waterfall, river, ravine or other obstacle

Step - A step, ledge, stair or low ledge that must be stepped on

A ford - Unbridged river/a stream, wetland or a swamp

<1m - Less than one meter