From the higher to the lower locations, the following geological formations are present:[2] The Zikuli, Geba and Zeyi gorges allow views on the full stratigrapical succession.

The main geomorphic units, with corresponding soil types are:[5] The rainfall pattern shows a very high seasonality with 70 to 80% of the annual rain falling in July and August.

[7] The drainage network of the tabia is organised as follows:[8] Whereas they are (nearly) dry during most of the year, during the main rainy season, these rivers carry high runoff discharges, sometimes in the form of flash floods.

Main reservoirs are: The tabia centre Dengolo holds a few administrative offices, a health post, a primary school, and some small shops.

[13] Especially the youngsters will go to the deep gorges of Giba and Zeyi rivers, near Kemishana, to harvest incense from Boswellia papyrifera trees.

Particularly, Ras Alula was born in Mennewe, the son of Engda Eqube, a farmer of modest origins.

[17] As compared to many other mountain areas in Ethiopia the villages are quite accessible, and during walks visitors may be invited for coffee, lunch or even for an overnight stay in a rural homestead.

[21] Starting from Inda Maryam Qorar, trek 8 leads directly down to Zeyi church and cave and further across the Zeyi and Giba gorges; the trek route meets Zikuli river and follows it upstream back to the main road, down from Mennewe.