The map of the battlefield shows the river running diagonally across it, with the camp where Thale is stationed located on the eastern bank. The enemy camp is located on the western bank, separated from Thale's camp by the wide and fast-flowing river. The terrain surrounding the river is rugged and hilly, with dense forests and steep cliffs making it difficult to traverse.
The river itself poses several challenges to Thale's mission. Firstly, the fast-flowing current makes it difficult for boats or rafts to navigate, making it hard for Thale to cross over to the enemy camp. Secondly, the wide and deep river makes it hard to ford, making it difficult for troops to cross. Thirdly, the river is a natural barrier that the enemy can use to their advantage, making it hard for Thale to infiltrate their camp.