Suggestions for you.
Meditation in Nature
- Meditation Oasis: How to Meditate in Nature
A great resource describing techniques for meditating in nature. The page also features an audio track.
- Sky Gazing With Chris Sharma (Video)
A guided meditation with Chris Sharma (a professional climber) and Mark Coleman (founder of Awake in the Wild and The Mindfulness Institute) which focuses on experiencing an open and vast space.
- Mindful Hiking
A post by Stephen Altschuler, author of "The Mindful Hiker" on BeliefNet, which provides some practical tips for getting into the practice of mindful hiking.
- Mindful Walking (Video)
A video by Mark Coleman (founder of Awake in the Wild and The Mindfulness Institute) describing how to practice mindful walking and walking meditation.