...
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.
...