If anyone needs help understanding what Israel’s current ground offensive in northern Gaza is primarily about, watch this video. It’s not as if Hamas is trying to conceal its aims:
Note especially at 2:30 that the entrance to a tunnel is inside a building.
Update: The commander of the IDF’s elite Golani Brigade, Col. Rassan Alian, happens to be a member of Israel’s minority Druze community. He was injured in the face during the current fighting in Gaza, but has returned to his unit.