Innertube is a two part puzzle cache. The first waypoint will reveal a container (the tube). The log is contained within this but it is out of reach. You must find the second location (co-ordinates supplied at first) to retrieve a tool that will allow you to retrieve the log container from the tube.
The second location is a short distance from the first. At the time that this cache was published, there was quite a lot of litter around the second location. Each time I visit I try to remove some - it'd be great if you were able to do the same. Cache In Trash Out!
The final cache contains a log only. Bring your own pen, and you may need tweezers or small fingers to remove the log from its container.
Please remember to replace the tool back at its original location once you have used it to retrieve the log. If you don't do this then the whole point of the cache is destroyed. It is only a very short walk.