To dream of a log ride represents a negative or uncertain situation that you are enjoying yourself with while knowing that you don’t have to care about any consequences. An unpredictable obstacle that you choose to subject yourself to just to see what happens.
Example: A young man dreamed of being on a log ride. In waking life the he attempted to discover the cause of a mysterious illness with medical tests just to see what would turn up. The log ride symbolized the ordeal of preparing for the tests and the anticipation of the unpredictable results.