The St Just-in-Roseland family whose holiday park was crowned best in England earlier this year has now won another top accolade - this time from conservation king David Bellamy.
The award is one of tourism's top honours for businesses that make exceptional efforts to protect and enhance the natural world.
It follows the family's winning in April this year of the national tourist board's Enjoy England Awards for Excellence, beating more than 3000 other holiday parks to the top spot.
David Bellamy's award was made after he commissioned a detailed audit to be made of Trethem Mill's environmental policies and practices.
The world-famous botanist said that the family had created "a wildlife wonderland" at their 12-acre park, which provides holiday pitches for touring caravans, motorhomes and tents.
Among the features highlighted in the audit was a wildflower meadow that has been created to attract a wide variety of colourful butterfly species to the high pollen-bearing blooms.
The report also singled out the many wildlife habitats and nesting boxes which have been established around the grounds, providing both food and breeding resources for animals and birds.
A recycling station for use by guests is another feature of the park's environment-friendly activities.
The David Bellamy Conservation Award also recognises the support given by winning businesses to the wider community, and Trethem Mill's park shop scored highly here too.
Special efforts had been made, the award assessors said, to source many products from local suppliers including food and locally brewed beer.
The family first moved to the park 18 years ago and have since invested much time and energy into making it one of the region's top destinations for holidaymakers.
Kept intentionally free of artificial attractions, the park draws couples and families seeking an away-from-it-all holiday base where the main pleasures come naturally.
"We feel very privileged to live and work in this wonderful part of Cornwall, and to have the opportunity to help preserve its very special character. Receiving the support of David Bellamy for our efforts is a great morale booster!" said Jane.