A man worker hanging on ropes by the exterior windows of a skyscraper - industrial alpinism
Three men workers hanging on ropes by the exterior windows of a skyscraper - industrial alpinism
A man worker hanging on ropes by the exterior windows of a skyscraper and cleaning them - industrial alpinism
Two men workers cleaning the exterior windows of a skyscraper - industrial alpinism - hanging on ropes
A man worker hanging on ropes and wipes the exterior windows of a business skyscraper - industrial alpinism
A man worker hanging on ropes by the exterior windows of a business skyscraper and cleaning them - industrial alpinism
A man worker hanging on ropes and wipes the exterior windows of a business skyscraper - industrial alpinism - overcast weather
industrial climbers are washing windows of skyscrapers
Workers hanging on ropes and wipes the exterior windows of a business skyscraper - attaching a device on the glass - industrial alpinism - overcast weather
Two men workers hanging on ropes by the exterior windows of a business skyscraper and cleansing them - industrial alpinism - overcast cold weather
A man worker in yellow work clothes hanging on ropes and wipes the exterior windows of a business skyscraper - industrial alpinism - overcast weather
Three men workers hanging on ropes and cleaning the exterior glass windows of a business skyscraper after rain - autumn time and overcast weather