This is the sixth in the series and should take a little longer than some of the others, you will have found the container and now you need to find the following information to access the logbook.
1 - count the number of horizontal bars on the the round part of the gate and this will be the first digit.
2 - count the number of wires held by the electric pole in the opposite field and this will be the second digit.
3 - count the number of bolts holding the round part of the gate together and times this by two to give you the third digit.
Now you can access the logbook !!!!