How and when did the T haplogroup M70 reach Northern Somalia?

Isogg is not updated being respectful nor rigorous with when the branches are discovered, In my work I give strict priority to the First discovered branches.
Thank you ---
Now, at least part of the mystery have been unlocked: Dirs and Garhajis belongs, as I predicted several month ago, to T1a1a2b son branch of Y16897 and reached Horn of Africa from the Arabian Peninsula through the Gulf of Aden.


I have added them to the tree:

Garhajis are now removed from the tree , does that mean there was an error in previous finding?

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