Menachek is a tabia or municipality in the Tanqua Millash district of the Tigray Region of Ethiopia.

The tabia centre is in Addi Bayro village (also called "Debre Birhan").

The tabia occupies the flanks of the valley of the Tsech'i River that drains Dogu'a Tembien to the west.

From the higher to the lower locations, the following geological formations are present:[1] The main geomorphic units, with corresponding soil types are:[2] The rainfall pattern shows a very high seasonality with 70 to 80% of the annual rain falling in July and August.

[3] As there are no permanent rivers, the presence of springs is of utmost importance for the local people.

The tabia centre Addi Bayro holds a few administrative offices, a health post, a primary school, and some small shops.

The main road Mekelle – Hagere Selam – Abiy Addi runs 2 to 5 km south and east of the tabia.