Valmiki Ramayana 6.71.22

रक्तकण्ठगुणो धीरो महापर्वतसन्निभः।कालः कालमहावक्त्रो मेघस्थ इव भास्करः॥

raktakaṇṭhaguṇo dhīro mahāparvatasannibhaḥ |kālaḥ kālamahāvaktro meghastha iva bhāskaraḥ ||

Our plain-language meaning of this verse is waiting for scholar review.