Nile river along Gebel Al-Silsila, Egypt, North Africa, Africa

nile river egypt north africa landscape ancient formations water nature terrain rock formations blue sky greenery cultural heritage historical site travel riverbank vegetation geology scenic view outdoor desert horizon archaeological environment exploration sunlight serene natural beauty sandy cliffs unique shapes ecotourism adventure heritage sites flora fauna tranquility culture local nature historic landscapes river ecosystems ancient civilization outdoor activities ecosystem sustainability historic exploration travel destinations geological formations