The document appears to be a series of tweets from Prof. A.K. Mondal regarding his invited lecture at BOT-VU on May 21st, 2019. There are over 50 tweets that are all tagged with @Prof. A.K.Mondal, BOT-VU-Invited Lecture-21st May, 2019. One of the tweets includes an image overlaying a map of the eroding coastal stretch of Sankarpur in West Bengal.