Complex sentence: It is advisable to go during day to the village and return to Rameshwaram before Sun set as the entire 15 km stretch is very lonely and there have rumours of some instances of robbery and drug-peddling in the area.
Split into simpler sentences: It is advisable to visit the village during the day and return to Rameshwaram before sunset as the entire 15 km stretch is very lonely and scary. There have been rumours of some instances of robbery and drug-peddling in the area.