I had the Cache Me If You Can Key that I needed to drop off in a cache before heading home. It is pretty tough finding a container big enough to put a travelbug in. It is extremely tough to find a cache after the sun had started to go away. I tried to find a regular sized cache at another location but couldn't locate it. This was my second choice and last one for that fact since it was getting dark already. I pulled into the parking area and made my way down there. Holy cow, the rain really made this place muddy. Started walking in the direction I thought the cache was located but it didn't seem to get me closer, so I made a 180 and went the other way. At about 0.1 miles I saw the stream crossing. With all the rain, that stream was moving pretty good, add in the muddy banks and the darkness and this was going to be a tricky cache find. Made it across the stream and to GZ but I couldn't find the cache. Looked for a long time and when I was about to give it up there it was. Signed the log and dropped the special TB. Then back to the mud and stream crossing. When I got back to the car there was the park patrol looking for me. I apologized and out of the park I went.