Valmiki Ramayana Aranya Kanda Sarga 11 Shloka 42

वनषण्डस्य of the cluster of trees, पार्श्वतः nearby, दक्षिणाम् in southerly, दिशम् direction, आस्थाय after setting out, योजनम् for a yojana, अन्तरा at a distance, गत्वा after going, तत्र there, अगस्त्याश्रमपदम् Agastya's hermitage.

If you go in the southern direction for a yojana you will find Agasthya's hermitage by the side of a cluster of trees.