Ramayana
लङ्कापुनर्निरालम्बादेवदुर्गाभयावहा । नादेयंपार्वतंवान्यंकृत्रिमंचचतुर्विधम् ॥ ६-३-२०
"Lanka is difficult to access even for devatas located on high peaks of the mountain. It is fierce to onlookers, surrounded by four kinds of forts, like rivers, mountains, forests and artificial fortresses. ॥ 6-3-20॥
english translation
laGkApunarnirAlambAdevadurgAbhayAvahA । nAdeyaMpArvataMvAnyaMkRtrimaMcacaturvidham ॥ 6-3-20
hk transliteration by Sanscript