Following Dr Ng’s email, had small meeting on Cheung Chau re graffiti on rocks problem. Various ideas, inc efforts to educate people, clean graffiti, and have day focusing on the marvellous rocks around the island.
Today, had trial clean of graffiti on huge balancing rock at Po Yue Wan, southwest Lantau.
Used some paint stripper, brushed on; waited some minutes, and washed much of it off with water. Found that could remove much paint – albeit not ideal, need more work; while no apparent impact on actual granite.
Here are before and after shots: