What evolutionary pressures would lead to Trolls?

In a world I'm designing, a group of Homo Habilis or even Australopithecus Afarensis migrated into a northern Scotland environment becoming Trolls. These are not D&D trolls, but something else. and I was wondering what evolutionary pressures would lead to them? some basic characteristics these Trolls (with the help of Nicolai) include:

• Never stop growing, even after they exit the growth spurt of juveniles and are capable of reaching 8ft in height
• are bipedal
• Have an average lifespan of 150-170 years (barring major injuries)
• Have large noses
• Are mostly covered in a thick, coarse hair. Like that of wolverines
• have surprisingly human like eyes
• Have orangutan-like strength
• Have very rudimentary tool use
• Have very sensitive eyes and are nocturnal
• Their diet consists primarily of plant matter, though they scrounge a certain amount of protein from insects and carrion and will occasionally scavenge dead animals
• They are not significantly prone to cancers
• Are mostly solitary similar to orangutans but do form small groups during the colder months
• males sing to attract mates similar to whales
• Can fully regrow missing limbs in approximately 1025-1095 days (due to a stem cell based ability for continuous re-growth) similar to axolotls

Note: Magic does not exist in my world

posted over 4 years ago

icewar1908‭

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