Take a walk through Sawagi Janubiyya
Cross the gash bridge and take the road to your left which leads you through the sawagi villages. after five kilometres or so, you can get alongside the gash, and if it is dry, you can cross over to the mountains and khatmiya.
Climb Totil Mountain
For fantastic views of kassala, and beyond to wad sherifei refugee camp and eritrea. to reach the summit, you need special equipment, but you can get half way easily enough in about half an hour.
Drink coffee
At one of kassala's hundreds of tea stalls or at a cafe on totil mountain.