sāṭṭālenonnatena ca

akasa-gaṅgaya-by Ganges water known as Akasa-gaṅga; devya-the always-worshipable goddess; vrtam-surrounded; parikha-bhutaya-as a trench; prakarena-by ramparts; agni-varnena-resembling fire; sa-attalena-with places for fighting; unnatena-very high; ca-and.