A chimney like structure is definitely unique in a typical rural Bengal landscape near Kamarkundu under Singur PS. It is Semaphore, popularly known as optical telegraph, which was a most popular communication technology in the pre-telegram days. Semaphore was a visual signal system introduced in India by the British during 1816 – 1830 when series of towers were planned between Calcutta Fort William and Chunar Fort of Varanasi (Benaras). The line said to contain 70 – 80 feet high towers at an interval of 8 miles (13 KM). Thus, on a clear day messages were passed from Fort Willium (Kolkata) to Chunar Fort in just 50 minutes. It still stands near railway track at Bhola between Singur and Nalikul stations.