Trimble Access Tunnels is a software solution specifically designed for surveying and constructing tunnel projects. It allows users to collect data efficiently using Trimble total stations, automate tasks like staking out, and generate reports for quality control. This software provides a comprehensive approach to tunnel construction, offering features like seamless data transfer between field and office, customizable outputs, and compatibility with various Trimble hardware like total stations and data collectors. The subscription model provides users with flexible licensing and access to the latest updates.