Quick story:
One day, I was walking up Allenford to get to the Country Mart when I spotted a short, hollow metal pole filled with nuts (I wonder how). I decided it was a good spot for a cache, so I hid one there.
#NutsInAPole
Anyway, you are looking for a small bottle. Shouldn't be too hard to find. When opening the bottle, make sure to push the lid down hard while twisting to make sure it opens. There is a log with a few trinkets inside. If you have any trackables, this is a good spot to leave them because the cache is a park 'n grab, so they can move in and out easily. Make sure to put the cache back EXACTLY where it was when you found it. Good luck :)
Congrats to setdecbeth for being the first to find!