All of my red/yellow heathens except one yellow one had been converted. Then I got an island event when a heathen approached and wanted a tour of the island. I said "ok" and the heathen then offered a tour of their island. Result - I gained a new believer - my last yellow mask. However the "filthy encampment" did not get beautified. It's still a mess. What now? Is there a way to beautify the encampment? I tried another earthquake but nothing changed.