To minimize friction on the chain it ran over round logs (rollers) put at the top.

Adventurous children scramble over rocks and logs to get a good view.

I crashed maybe five times just trying to ride over logs and stuff like that.

But not Joe Murray, who would rather avoid haggling over individual logs.

When children see their mothers rolling over logs to eat the insects beneath, they quickly learn to do the same.

They cautiously peered around trees, and over bushes or fallen logs.

Over the low bushes and logs he leaped frantically.

For example, teams would carry buckets of water over greasy poles or rolling logs.

In a split second, he turned to race along the river bank, leaping over small logs and bushes.

It can climb over logs, go up steep slopes, and cross rivers in 1st gear.