Previously shopping trolleys and traffic cones have been found in the baths
Algae and sludge deposits built up over years are being removed from the original Roman lead-lined floor of one of Bath's top tourist attractions.
The Great Bath at the city's Roman Baths has been drained of natural thermae spa water for the clean-up.
The site, below the modern street level, is one of the best examples of a preserved Roman bath complex in Europe.
Previous cleanings have revealed modern debris, including traffic cones, shopping trolleys and even a moped.
The steps, which were rediscovered in the 1800s, and the Great Bath's lead lining are more than 2,000 years old.
More than 1,000,000 people visit the baths each year.