About Us 
Ross & Cromarty Archaeological Services (RoCAS) is a
Highlands-based archaeology consultancy firm established in
January 2010 by Mary K. Peteranna and Lynn Fraser,
both based on the Black Isle near Inverness. RoCAS provides
contract archaeology services to a wide-variety of public sectors, including construction, engineering, utilities
and forestry, as well as private individuals and community groups throughout the Highlands.
We use Juniper's Archer Field PC and Trimble's Geo-XR Rover (capable of centimetre accuracy) during
fieldwork. Our use of ArcMap and ArcPad GIS software at the desk and in the field complies with Highland
Council requirements.
We are dedicated to the archaeology and heritage of
the Highlands and maintain excellent relationships with our
Highlands- and Islands-based colleagues and with the Highland
Council Historic Environment Team. We are interested and
experienced in all types of contract, community and research-
based archaeological work. We hold First Aid qualifications
from British Red Cross and have completed Health and
Safety courses in the past.
Mary K. Peteranna
Prior to forming RoCAS, Mary directed a large contract
-based excavation of a prehistoric burial site in Armadale, Isle of
Skye in 2009/2010 and co-directed the Applecross Broch
Community Archaeology Project in Wester Ross from 2006-
2010. In 2011, she co-directed a contract-based
excavation of a prehistoric site at Broadford, Isle of Skye
and in recent years has led numerous smaller projects
around the Highlands and Islands. During the past eight years,
she has worked on development and heritage projects for a
variety of public and private businesses.
Mary serves as Treasurer on the committee for the Scottish
Group of the Institute for Archaeologists (SGIfA) and is a
Practitioner in the Institute for Archaeologists (PIfA). She is
also a Fellow in the Society of Antiquaries of Scotland and a
member of North of Scotland Archaeology Society (NOSAS).
Mary received two Bachelor of Arts degrees from Boston
University (Boston, MA, USA) in Archaeology and French
Language/Literature. After university, she served four years as
an officer in the U.S. Navy, a commitment required as a result of
a financial scholarship to fund her university studies. She
completed Naval tours of duty as a Surface Warfare Officer and
Meteorological Duty Officer, in addition to serving as shipboard
Health & Safety Officer. She is a fluent French speaker.
Lynn Fraser
Lynn has conducted archaeological work in the Highlands for
the past six years. She formed part of the excavation team on
the Armadale, Skye burial site and in 2012, she directed excavations
of a prehistoric site near Fortrose. Prior to forming RoCAS, she
worked on various community and research digs throughout the
Highlands in addition to working on the Birnie excavations
under Dr. Fraser Hunter for five seasons.
Lynn served for many years as a leader of the Ross and Cromarty
Young Archaeologists' Club (YAC) and is a member and former
committee member of North of Scotland Archaeology Society (NOSAS).
She is a Fellow of the Society of Antiquaries of Scotland.
Lynn received a Bachelor of Law degree and Diploma in Legal
Practice from Aberdeen University. After leaving the legal world
behind Lynn raised a family whilst co-managing the family business.
Following a long-held interest in history, archaeology and the
environment, she completed a BSc (Hons) in Environment &
Heritage Studies through UHI with an emphasis on practical
experience in the field.
