 The purpose of this experiment is to study how radioactive material could travel from the land into the sea. We use the simple approximate plaster model and spread water on it and observe how material could be transported particularly from the land to the sea. We've observed that a good amount of this dust or colored pigment can wash away from the top of the mountain down the valley into the river and eventually into the ocean. This map is not accurate and does not represent the current action but is just helping us to understand better the phenomenon. Here we create as if there was a tunnel and the transport of larger debris from the surface into the ocean. Thank you.