Expired4.70 Advanced Walling/5.20 Sphere Feature Build: May 20-21, 2022 (Dummerston, VT)

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  • 4.70/5.20 Sphere Feature Build: May 20-21, 2022 (Dummerston, VT)
    Saturday and Sunday 9am to 5pm each day.
    May 20, 2022 - May 21, 2022
    9:00 am - 5:00 pm

Learn to work with slate and build a fantastic permanent feature!

Certified Level 2 Intermediate/Professional Wallers, please register for 4.70 Advanced Walling Sphere Build.

All others, please register for 5.20 Sphere Feature Build.

Please register by  May 8, 2022

Building a dry stone sphere is challenging task, much appreciated by people of all skill levels.  Carefully stacked stone spheres and similar shapes have been built by a number of wallers and stone artists, sparking wonderment and joy when viewing pictures and even more so when when viewed in person.  Come help build a sphere five feet in diameter that sits atop a granite pedestal as a prominent new feature in the Stone Wall Park.  Over two days we will be splitting, trimming, and stacking slate donated by Camara Slate in Fair Haven, Vermont.

Originally planned to celebrate the Stone Trust’s tenth anniversary in 2020, we have decided the time is right for a stone sphere to be built at the Stone Trust Center at the Scott Farm in Dummerston, Vermont. Come help us pay respect to the artistic side of the craft of dry stone walling as we build together a memorial to all those who have contributed to the Stone Trust since its founding in 2010. The completed slate sphere stands as a thank-you to board members new and old, workshop participants who trusted in stone, the professional wallers who carry on the traditions of the craft, to those entering in the next generation, and to our generous donors who have believed in the Stone Trust. May the completed sphere memorialize our collective efforts and provide hope and passion for the future of traditional dry stone walling.

This workshop runs as a joint 4.70 Walling Day and a 5.20 Feature Build.  To build this advanced feature requires quite a few skilled stone workers to complete it on our tight schedule.  The 4.70 Walling Day ticket allows wallers who are Professional Members and wallers certified at DSWA-GB Level II Intermediate and above to participate at a nominal cost. For those with a less experience , the 5.20 Feature Build Ticket offers you an in-depth learning experience. (Prerequisites still apply. See below.) It allows you to work alongside more experienced stone workers.

Workshop objectives and format:

You will gain experience splitting and trimming slate, as well as how to approach stacking for complex features, and setting up guides for keeping the geometry true.

Sphere construction is very tedious, time-consuming work. Every course changes the outside curve radius. Elevating the sphere on a two-foot-high granite pedestal puts the lower part of the sphere at a comfortable building height. A few participants at a time will build and heart each course, while teams of wallers work on banker blocks (stone shaping tables) using profiles to shape the needed pieces of stone. By rotating you wallers in and out, everyone gets a turns to split, trim, and stack.

  Later, we will introduce scaffolding for completion of the second half of the build. Through this sphere memorial team project, along with the historic Dutton Farm Wall Rebuild,  we merge the ancient craft tradition of walling with the increasingly popular art movement found within dry stone walling.

4.70 Advanced Walling Day:  This ticket is only for individuals who are already certified DSWA-GB Level II (Intermediate) or higher.  This allows skilled wallers to return and experience the wonderful camaraderie of building along side other skilled wallers and less experienced participants.  Working slate and building complex geometric shapes present unusual challenges; this is a great opportunity to expand your repertoire and portfolio.

5.20  Feature Build Workshop.  This ticket is for anyone who has taken at least one of the prerequisites.   This will be an in-depth learning experience, covering the key elements of building curves, cheek ends, and retaining walls.    It is suitable for those with moderate experience looking to advance their walling skills.

Prerequisite Requirements: To take this course you will need to have had at least two days of prior dry stone wall courses, or be DSWA-GB Certified at any level.

Any of the following are suitable examples of prerequisites.

  1.  DSWA-GB Level I (Initial) Certification (course 2.90)
  2.  Course 2.10 Historic Wall Rebuild
  3.  Course 1.20 Two-Day Intro to Dry Stone Walling
  4.  Course  1.10 One day Intro AND Course 2.50 Intro to Stone Shaping

If you have any questions about the prerequisites, please email us at info@thestonetrust.org

About the Instructors: Brian Post and Torben Larsen

Jared Flynn

JARED FLYNN is a native Vermonter who’s passion is the preservation of Dry Stone Walls. As a founding member of the Stone Trust his efforts have supported Dry Stone enthusiasts and professionals with access to all things related to Walling.

Brian Post

BRIAN POST, a Certified DSWA-GB Master Craftsman and Licensed Landscape Architect, started building walls at age 10…


Venue Phone: (802) 952-8600

Venue Website:

707 Kipling Rd, Dummerston, Vermont, 05301, United States


Located on Scott Farm, The Stone Trust Center is home to North America’s only indoor dry stone walling training and certification facility.  Outside is the Master Feature Park with all the features that can be used in the Advanced and Master Craftsman tests.  There is also a mini walling park where visitors can practice stacking small stones at table height.

Click for Directions and Transportation information.

The Landmark Trust USA has 3 restored historic homes available as places to stay. The Sugarhouse sleeps 2, the Kipling Carriage House sleeps 4, and the Dutton Farm House sleeps 8 people. All of these places to stay are with in a mile and a half of the The Stone Trust Center.  If coming with a group please check for availability.