The slight slope and man-made obstacles disrupted the charge.

On sectional charts, man-made obstacles less than 200 feet in height may not be shown.

The trail also includes natural and man-made obstacles such as rocks, wooden bridges, logs and stairsteps.

After several hours, those man-made obstacles were completely cleared and the Jin fleet continued advancing.

Each race has around 12 man-made and natural obstacles that runners must overcome.

Bike trials - Slow negotiation of man-made and natural obstacles where setting a foot down constitutes a penalty.

But man-made obstacles had never stopped him before.

Just 20 feet from the docks is a street course positioned with man-made obstacles including rails, box jumps and halfpipes.

Avoid trees, stumps, rocks, branches or "man-made obstacles," it warns.

Bike trials is a sport where riders navigate natural and man-made obstacles without putting down their foot, or "dabbing".