In this paper we propose an energy efficient position based clustering scheme for WSN that is deployed in a long strip area. The strip area has long width and relatively very small width and is divided into small belt areas. The proposed clustering algorithm selects a cluster-head for each belt area based on its current position in belt area plus distance to the base station and residual energy of the node. The routing between far end nodes and base station is carried out in multi-hop chain based fashion. The simulation results show that our proposed scheme has more stability and consumes less energy than previous schemes.