The crossing the entire ocean incapable of being crossed, by the monkey-forces, and the building over the sea of the bridge by Rāma, all this had never happened before.
समग्रं सागरं तीण दुस्तरं वानरं बलम्। अभूतपूर्व रामेण सागरे सेतुबन्धनम्॥