Wirral Country Park
Wirral Country Park was the first designated country park in Britain, formally opened in 1973 by Lord Leverhulme. It is located along the Wirral Way, which follows the track bed of part of the former Birkenhead Railway line from West Kirby to Hooton.
Click on the above image for a jigsaw. On completion you should be able to head off and find the cache. Having a free account/logon for the jigsaw will enable you to stop part way through and resume at a later time. Without an account you would have to restart the jigsaw when you resumed.