Valmiki Ramayana 2.28.8
क्रीडमानाश्च विस्रब्धा मत्ताह् शून्ये महामृगाः ।दृष्ट्वा समभिवर्तन्ते सीते दुःखमतो वनम्॥
krīḍamānāśca visrabdhā mattāh śūnye mahāmṛgāḥ |dṛṣṭvā samabhivartante sīte duḥkhamato vanam ||
Our plain-language meaning of this verse is waiting for scholar review.