Optech has released its next-generation cavity monitoring system, the CMS V400.  Claimed to be the ideal scanning solution for dangerous and inaccessible cavities, according to the Canadian LIDAR specialist, the CMS V400 has been completely revamped from previous models, delivering four times the point density in half the time. In addition to drastically reducing scan time, a modern graphical user interface with real-time data streaming and built-in post-processing has been developed. This enables the user to verify successful data collection and geo-referencing while in the field. The system is easy to transport and set up, and is fully programmable allowing the user to define scan parameters such as elevation step, azimuth step and scan limits.