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d) Keep the EarthCache to one topic.
An EarthCache usual usually works best when it covers one topic, not several. Some related topics can be described, but then there must should be a strong connection. For example, land rising and shingle beach can work, but not land rising and grain size in minerals/rocks.
Try to keep the EarthCache to one topic, in description and logging task.
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The focus of the questions has of course to follow the cache description and be about the local geology. The answers should make sure the visitors have been at the cache, and therefore should not be found on the Internet. It’s the answers to the question that shows that the person really did find the correct location.
The recommendation is to put the strongest question first question in the logging task should always be the strongest, the visitor should find the answer at the cache location and not on the Internet. The question should also make the visitor "think" a little, this means that the answers cannot be an easy measurement tasks or just "readable" from an information sign, you can use an information sign as information to the cache but just not to read the answer from.
Remember: The visit to the cache location combined with the cache description should make it possible to complete the logging task.
Visitors should reflect about what they see and read, and learn something about geology by completing the logging task.
A question like "describe what you see" is not good enough, visitors will see different things and there is no right answer. The question must should be more specific.
4) Questionable/difficult topics, see link.
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