The Kalasha have nothing to do with hinduism. Not all pre-Islamic peoples who believed in dieties or pagans were hindu in Pakistan. I dont know why people tend to make this generalization! Its very frustrating at times and needs to be clarified. The inhabitants of Pakistan, before the arrival of Islam followed a plethora of different religions/beliefs with Buddhism being the most significant, but also Zorastrianism, Shamanism, Deity worship and nature worship.
In Northern Pakistan, Animism and Shamanism were predominant and still exist to this day. The Kalasha worship a number of dieties quite distinct from those worshipped in other polytheistic cultures and religion. The closest similarities found with the Kalasha dieties have been with those of Ancient Greece but many other's are entirely specific only to the Kalasha themselves.
Also, the Greek government initially carried out several surveys throughout the region and it was they who ''confirmed'' the statement that the Kalasha are ''genuinely'' of Greek/Macedonian/Ionian origin after carrying out other similar surverys in other parts of the area. They correlated this with several ancient artifacts and customs unique to the ancient inhabitants of their country, including lost customs which were still known to them.
The Kalasha tribes are invited every year to attend Hellenic festivals in Athens, all paid for and subsidized by the Greek Government. They have helped to develop the area, build schools and assisted the Government of Pakistan in developing the region with financial aid and otherwise.
While I too believe that with the subsequent merger of PAKISTAN into the Hellenic /Greek Empire. Pakistan was the Easternmost satrap of the Greek Empire with the Hellenic kingdoms easternmost outpost established at Sagala (modern day Sialkot in North East Pakistan) and knowing that Alexander turned back and didnt go any further east of modern day Pakistan but sailed down the modern day nations Indus river on his way back home. Many Greeks/Macedonian's had simply decided to stay on, having travelled so extensively for years and were absorbed into Pakistan's local population and such their genetic imprint would technically be present in those areas we could correlate with regions they passed through on their arrival to Pakistan. Fortunately, the Greeks made extensive maps and recorded all their movements which have allowed us to properly correlate where and when they went somewhere. It is because of these maps that we now know, and have corrected the misnomer, that ancient Greeks had travelled to India, which is incorrect, as according their own maps and accounts, they reached the trans-indus region and established their outpost at Sialkot. So much can be glimpsed into the account of their period.
The following regions of Pakistan are of noteworthy significance:
The Khyber Pass (inhabited by the Afridi Tribe) - It should be noted, that the Afridi tribes living in the Pass look distinct from their clansmen who are also ''Afridi'' but live in the 'Tirah' region and have an oral tradition whereby they ''allowed'' and gave permission to Alexander and his troops/convoy to pass through and that a mass marriage was held in a grand ceremony between the tribe and Alexander's large convoy.
Bajaur (Pakistan) - One section of Alexander's forces headed north through Bajaur and established/founded the city of Nawagai in modern day Pakistan, again the people of Bajaur are said to have a peculiar characteristics quite in distinction to other Pashtun tribes surrounding them.
Chitral - Several of Alexander's troops headed north and decided to settle down, having travelled so far from home. They are believed to have settled several valleys in the Chitral district of Pakistan as well as valleys in todays Nuristan region of Afghanistan. other northern region of Pakistan include parts of Gilgit, Swat and Kohistan of Pakistan. (most of these areas were ''cut off'' from the rest of the world until about a century ago)
Taxilla - We know that a ceremony and an alliance was formed in this ancient city about a half hour drive from Pakistan's capital of Islamabad. Again, the city was populated with Greek Artisans and teachers, much of the old city was designed on a classical Greek Urban plan and exists to this day. The pottery tradition still exists to this day for which taxilla is very famour for.
Jhelum - Here we know of the famous battle against King Porus. In Pakistan today, the people(s) of Jhelum are said to have 'yu-nani ru'' which roughly translates to Ionian like Features (faces). Again local tradition states that Alexander held a mass marriage around the city. Alexander's famed horse, Bucephalus, is burried outside the city.
Sialkot (Sagala) - After Alexanders troops refused to go any further, the Greeks/Macedonians established their easternmost outpost here on and again held a mass marriage with locals of Sialkot.
Multan (Alexandria) - Here, on travelling down the Indus Alexander was almost fatally struck. The city was rebuilt, again a mass marriage was held and renamed Alexandria.
Thatta, Sindh - Another ALexandria, same scenerio as before
Bhambore, Sindh - from where his fleet ships sailed back while the other half of the army took the desert through Pakistan's wild Balochistan province.
The reason I went into a bit of detail here is, that I think that we need to do a genetic imprints from people who live in and around these cities as they would, if anything, show us how much of genetic impact the greeks had. Also, similar studies could be done along other known paths taken by them in Iran, Iraq and Afghanistan. Such a study, would truly be interesting and help us to better understand the impact of foreign genes on local populations.
I wanted to add a photograph which shows the similiarities in the attire of Kalasha women of Pakistan with those worn by Macedonians. but for some reason its not letting me attach it.. hmmmm... help anyone!??