Namaste,
Landscape in the Nāṭyaśāstra and clues to its spatial origin: A study in 2019 is the title of a paper which was presented at a National Seminar in Himachal Pradesh earlier this year.
Here is eminent historian of Indian-Kashmiri origin (पद्मश्री awardee) Dr. Subhash Kak's appraisal:
https://twitter.com/subhash_kak/status/1316778379610386434?s=20
Anyone interested in, amongst other things, the history of Bhārata's Kashmir, might find some academic points which may be of interest/resonance/use. A pdf of the paper (attached with this post) can also be accessed from Academia here.
