The insistent trill of the ATRE continued, a constant background hum to the island's symphony of rustling leaves and distant animal cries. Before Alastor and the other participants realized it, four full days had elapsed since the challenge commenced. Already, some individuals were halfway through the network of motion detectors he had strategically placed along his chosen path. They were getting closer.
Alastor sighed, his gaze fixed on the buzzing motion detector monitor. He knew the pace of advancement would only accelerate from this point onward. It wouldn't take another four days for the leading group to cover the remaining distance. Their progress would be significantly faster now that they had acclimated to the island environment and were more familiar with their surroundings.