France
Sources:
- Fréjus (Esterell Mts.)
- Castellas
- Collet Petit Redon
- Défend - Petit Defend
- La Vigne
- Le Forestier
- Les Darboussières - La Louve
- Plateau de Grane
Fréjus (Esterell Mts.)
Till now there's only one known source for thundereggs in France - Fréjus in the Esterell Mountains. There are a few sub-locations in this area as listed above, but most are not available anymore because the area is a Natural Reserve today.
La Vigne

size: 28x33 mm
A small but neat specimen from the sub-site 'La Vigne' near Fréjus. The color of the matrix is more light green and the level banding is really cool.
Les Darboussières (La Louve)

size: 40x43 mm
A pretty and rather big egg from La Louve. There's a nice cavity in it. I'll try to make a photo.














