Agricultural path Dispute

Hello Sir.... I am from Erode. We have 5 acres of agricultural land surrounded by others agricultural land on all sides. We have only one common path to our land. This land is originally owned by my grandfather and after his death, this land was written in my brothers name. Actually, we and other neighbours have been using this path from very long time ( around 60 -70 yrs min ). But there is no Documents about the path. In my grandfathers time, They just had oral agreement that instead of blocking the common path, one neighbour would use the other side of the land and use it. And Main thing is there is no documented proof for that. The neighbour land owner area of land that comes under common path way is very small but he is blocking the way to our land saying he will do whatever he wants in his land. We also have a old house where our grandparents stayed till two yrs back. After their death, it is left empty. Is there any way so that justice can be given for this case. ( even though document is not available ). Note: His portion of land is like a cross land and it is blocking the way in just 50 m ( approx) like tat. Thanks for reading this...... Please leave your valuable comments on this. Once again thanks a lot Sir.....