venture into (some place)
To move forward into some place, especially in a courageous but cautious or wary manner. The explorers ventured into the dense jungle, hoping to find the remains of the ancient civilization they had read about. No way am I venturing into some pitch-black cave—who knows what might be lurking in there!
venture into
v. To proceed into something despite possible danger or risk: The explorers ventured into the dark cave.