Dicranopteris linearis

Dicranopteris linearis (Burm. f.) Underw., Bull. Torrey Bot. Club 34(5): 250 250 1907. (Syn: Dicranopteris dichotoma (Thunb.) Bernh.; Gleichenia ferruginea Blume; Gleichenia hermanni R. Br.; Gleichenia lanigera D. Don; Gleichenia linearis (Burm. f.) C.B. Clarke; Gleichenia rigida J. Sm.; Mertensia lessonii A. Rich.; Mertensia linearis (Burm. f.) Fritsch; Mertensia rufinervis Mart.; Platyzoma ferrugineum Desv.; Platyzoma latum Desv.; Polypodium lineare Burm. f.; Polypodium pedatum Houtt.; Pteris platylata Christenh.);
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Tropical & Subtropical Old World: Andaman Is., Angola, Assam, Bangladesh, Bismarck Archipelago, Borneo, Burundi, Cambodia, Cameroon, Cape Provinces, Caroline Is., China South-Central, China Southeast, Comoros, Cook Is., East Himalaya, Equatorial Guinea, Ethiopia, Fiji, Gabon, Ghana, Guinea, Gulf of Guinea Is., Hainan, Hawaii, India, Ivory Coast, Japan, Jawa, Kenya, KwaZulu-Natal, Laos, Lesser Sunda Is., Liberia, Madagascar, Malawi, Malaya, Maluku, Marianas, Marquesas, Mauritius, Mozambique, Myanmar, Nansei-shoto, Nepal, New Caledonia, New Guinea, New South Wales, New Zealand North, Nicobar Is., Nigeria, Northern Provinces, Northern Territory, Philippines, Pitcairn Is., Queensland, Rwanda, Réunion, Samoa, Seychelles, Sierra Leone, Society Is., Solomon Is., Sri Lanka, Sulawesi, Sumatera, Swaziland, Taiwan, Tanzania, Thailand, Tonga, Tuamotu, Tubuai Is., Uganda, Vanuatu, Vietnam, Wallis-Futuna Is., Western Australia, Zambia, Zaïre, Zimbabwe as per POWO;
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i think nephrolepsis sps

If it assumes tree size, it may be Alsophila sp.

Thank you hari for your suggestion of Nephrolepis. However, I cannot see any that look like it.
Thank you … for your suggestion of Alsophila. Again I can see nothing like it.
If you look at my pics you can see my head in pic 4.
The ferns tower above me. But the growth is not with a trunk as tree ferns grow.
Each frond is forked and keeps re forking as it get larger.
I have tried searching www and the nearest I get is the forked ferns in Gleicheniaceae.
Nearest is Diplopterygium .. see image below.
plantsystematics
However, I do know ferns are very very difficult to id especially from a few amateur images.
I do not know whether the above ferns even grow in India.
I was hoping that there might be an expert with local knowledge of the ferns that grow near Lava that would immediately say what it is.

I should have mentioned that it was towering above me…
but was growing on a steep bank, and weeping downwards towards the track.

DICRANOPTERIS LINEARIS

I was actually thinking of Dicranopteris but I think I have seen this in Sikkim. It is much bigger with longer fronds.
I just have a closeup though 🙁

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