The Smart Terra Sense is a modular disaster prevention solution featuring tension sensors powered by AI, designed specifically to detect and respond to landslides. This system does more than simple detection; it captures early warning signs, translating them into real-time alerts and preemptive evacuation actions, setting itself apart from traditional passive barriers. Accelerated deforestation and climate change are driving a rise in landslide frequency and severity worldwide. In 2024 alone, over 900 people were killed by debris flows in Papua New Guinea and Ethiopia. Our system integrates AI-powered tension sensors into dam structures to detect early signs of debris flow. Long-range wireless communication enables reliable operation in both urban and remote mountainous regions. By supporting community decision-making and focusing on public safety, our system offers a proactive smart infrastructure for disaster prevention that empowers local, resilient communities to act ahead of natural disasters.