Complete the following text: what i discovered was a puddle of glowing water on the ground that was about the size of a basketball . naturally , i picked up a small rock and threw it into the puddle expecting a dramatic splash of glowing water , but instead the rock simply disappeared . so i picked up a larger rock and threw it in , and it disappeared without a splash . there were n't any other rocks nearby , so i pulled up a small plant and threw it into the
puddle