El Kantara is the most central of Constantine's bridges — the one you will cross most often if staying in the old city — and arguably offers the best view of the gorge, looking north toward the Sidi M'Cid suspension bridge with the cliff-face buildings of the old medina stacked above you on the left. The arch is low and broad, spanning the narrowest accessible point of the Rhumel canyon.
The views from the bridge railings are vertiginous. The gorge here is over 100 metres deep and perhaps 30 metres wide at the crossing point; the walls drop sheer to the river far below. Looking south under the bridge arch, the gorge widens slightly and the ruins of older structures are visible in the cliff face. Early morning gives the best light and the smallest crowds.