"Wait," the Rani interjected. She detached a small remote from her sensor device and pointed it toward the hole. She studied the readings, frowned slightly, and then cautiously extended the device into the darkness.

((As they say in Trek scripts, "insert tech here". The Rani's gizmo scans along the entire electromagnetic spectrum for all types of radiation; it also scans for sound well outside the range of human hearing on either end; and finally for any kind of animal life-forms.))