Trail obstacle ideas?

[turbo84gn]

Kids want something a little more thrilling than just riding the 150KT around the farm. What are some dirt obstacles that others have done? Got about an acre on the side not used no for anything that I can do something with.

TIA

[SYCARMS]

Oval track?

[neo71665]

For my son I brush hogged random trails in the tall grass on our back pasture. After 2 years now of just mowing those down he has some good trails and created some small mud pits he can have fun in.

Also got a few simple trails cut down in a wooded part he can ride on that crosses a small shallow creek.