Possible Clues:

• E.g. Sunak travels around, showing signs of relief
• Features on topographic maps
• Lines on maps connecting points of equal height
• Study French city features on map
• Mislead groups of vacationers?
• Sam Rivers album about outlines?
• Lines on a map joining points of equal height
• Features of maps civil servants primarily carry when travelling
• Study trips - look at these on map?
• Curves or map lines in croutons