Good idea..incorporate the sensation path into the labyrinth...Barefoot Parks and Sensation Paths | Playscapes
natural log balance beam and stumps. Turn top of log into bench. Stumps could lead to climbing tower.
Simple Playground Landscaping | http://backyard-designs-ideas.blogspot.com/2014/02/childrens-playground-ideas-in-backyard.html
Backyard design ideas
For the natural playground- "Creating and Managing Places Where Children Engage with Nature"
Small Budget Gardening
Read more about Natural Playgrounds on Quiet Nature: http://www.quietnature.ca/natural-playgrounds-are-on-the-rise-in-ontario/
Inside and outside Preschool Classroom Ideas
Natural playground, CT Awaken a sense of discovery in children AND parents
An Early Natural Playground Advocate from 1926 | Playscapes
Garden path playground. Could work something similar between some of the trees back in the forest too
Projects to Try
Embankment Slide w/ sit down bar
Reggio Emilia natural playground