TDI Intro to Cave course

This course is an introduction to the basic principles of cave diving using a single guide line. The Intro to cave course is the second step in the development of cave diving techniques, building directly upon the TDI cavern diver course. This introduction to cave diving is not intended to train divers for all facets of cave diving, instead, the objective of this course is to master the skills learnt during the cavern diving program as well as learning and practicing the additional techniques and procedures required for simple cave dives.




SKU: TDI Intro to Cave Categories: , Tags: , , Product ID: 2143


TDI Intro to Cave course

The Intro To Cave Diver course is the second level of Overhead Environments training after the Cavern Diver course. Divers must complete the cavern course before enrolling in the TDI Full Cave Diver course. The focus of this course is enhancing the skills learned in the Cavern Diver course and to develop the new skills and techniques fundamental for basic cave diving. This course is for the certified TDI Cavern Diver or equivalent who has interest in moving forward into overhead environment diving and expanding their diving techniques, capabilities, and more.

Course Structure

Water Execution:


Six single guideline cave dives conducted at two different sites and six different caves




The course takes a minimum of four days to complete.

If combined with a cavern diver course, a minimum of 5 days and eight dives.

Certification Requirements:

Satisfactorily complete the TDI Intro to Cave Diver course written examination with a passing score of 80%, followed by 100% remediation by the instructor

Perform all land drills and cave dive requirements efficiently

Demonstrate mature, sound judgment concerning dive planning and execution

Maintain an appropriate level of awareness and respect for the environment

Log all training dives

Student Diver Prerequisites:

TDI Intro to Cave course, student candidates prerequisites:

The minimum age to start the training is 18, or 15 with parental approval

Provide evidence of certification as a TDI Cavern Diver or equivalent

Skills include:

Properly deploy a guideline

Proper use of line markers

Following the permanent cave line simulating loss viz

While following the system’s exit line, share air with a buddy

Share gas with a buddy with lights off and eyes closed, using touch contact communication while following the exit line

Replace dive mask while in contact with the line

Conservation, awareness, and back referencing techniques

Light/hand signals and touch contact communication

Proper anti-silting procedures

Manage a primary light failure and use a back-up light to exit

Exhibit perfect buoyancy control, trim, and propulsion techniques

TDI Intro to Cave Diver Qualifications

Once successful completion of this course is achieved, students will be able to safely participate in single guideline cave dives without supervision, as long as staying within the following limits:

Diving activities approximate those of training

Plan dives not to exceed the current level of training

Penetration is limited to 1/6th of available gas volume when using redundant air sources

Maximum depth of 40 metres/130 feet

Use proper cave diving equipment

Maintain a continuous guideline


After completing this course, divers are qualified to continue to the next level of training: the TDI Full Cave Diver course.

Why Divers UnderGround

At Divers UnderGround©, we provide our students with as much knowledge as we possibly can using the best tools available to us. We help student divers advance safely and progressively into multiple overhead environments. Our experience, stories, and accident analysis reports available to us help students understand the necessity for adequate cave diving procedures and the risks associated with complacency in this type of diving. Our skills and practice are always evolving as we keep diving in more complex and challenging cave systems. We are also continuously involved in cave exploration and survey projects.


Although there are many good Cave Diving Instructors in the world, there are also a lot of clowns who only want to take your money. Any instructor can demonstrate, and tech Cave Diving skills, the importance of the experience of the instructor in actual Cave Diving situations cannot be understated. Real cave diving experiences and stories help students understand the necessity of proficiency and awareness when Cave Diving. Besides, being aware of possible dangerous situations and scenarios put in place by an experienced cave diving instructor is priceless when diving in overhead environments. Repeating skills over and over is great for training. However, an instructor that can teach valuable lessons is one who takes these skills into actual cave diving.

Cave Diving exploration is where new Cave Diving skills are developed, and existing skills are tested. It is the only way to keep cave diving training realistic.

Cave Diving Instructors who only dive in caves when they are teaching courses cannot teach anyone anything. They will tell you what they learned from their instructor, but even that information gets diminished in the process. A Cave Instructor must be an active cave diver, not just an enthusiastic instructor. Also, they need to have a couple of hundreds of cave dives to be able to teach you something valuable.

 Don’t be fooled by arrogance, the world’s most avid cave divers and instructors are usually the humble ones. Arrogant Cave Instructors are generally just trying to look cool and charge lots of money. 

Cause they are “cool.”

TDI Cave Instructor Mexico Camilo Garcia
Razor Sidemount Cave Instructor
TDI Full Cave Diver Course
TDI Full Cave Diver Course
TDI Intro to Cave Diver Course
TDI Cavern Diver Course

Intro to Cave Diver Course

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