Possible Clues:

• Like Miró's 'The Tilled Field'
• Dreamlike county curtailed with a line
• County tailender out having got a fifty? Fantastic!
• The French make a mistake taking us all back ... fantastic!
• Not entirely convinced about the heart of Dali being so?
• It's bizarre! Most of county has a hilly middle
• Bizarre, fantastic
• Bizarre county mainly backing city in California
• Certainly a learner grasping only arithmetic (say) would be bizarre
• Dreamlike, a 50 after county comes up short