Possible Clues:

• Small (grassy?) hill
• Little rise of £1,000? No, £50
• Only a little elevation given wise guy out of Western Australia
• Ring, as a bell
• Hill with a rounded top
• Grassy ___
• Dialect word for the top of a hill
• Briefly recognise lakes and hillock
• Bit of raised land
• Grassy area of Dallas' Dealey Plaza