Space and Time were always treated as a fascinating matter for the aspiring research fraternity of English literature. It is of contemporary relevance and practicality to discuss the topic in detail. Many theorists like Henry Lefebvre, Edward Soja, Yi Fu Tuan were leading the discussions based on Space through their seminal literary works. Here intention of this paper is to analyse the novel Gun Island in the light of space theory and study how spatial dimension were employed by Amitav Ghosh in his narrative. Sundarbans, the tide country is the focus of the narrative though which he talks about the major themes like marginalisation, trauma of the destitute, man vs. nature conflict and so on. The inclusive view of Sundarbans especially Lusibari is narrated here pinpointing the issues of refugees, ordeal of Dalits, Natural calamities etc. Lusibari, its people their beliefs, jobs, social conditions, educational background, economic aspects, and so on were talked about. The uneducated people who were strong believers and how intimately they keep and pass on their tradition beliefs, legends etc were shown in the novel. This paper will add knowledge regarding the space Lusibari and its culture to the reading public.