The area around the stockade is reasonably safe but has a low Aion Gold
The night-blood/lamia/nymph area in the north-eastern section of the map has a very high node concentration and is an excellent harvest spot for 40+ (or lowers if you’re the brave type). This area is my favorite Aion Gold harvesting site in the Enchanted Lands.
The best places I found to harvest in Nektulos Forest are close to the entrance of N`Marr’s Ascent. On either side of the bottom of the ramp are some smallish areas that have a high concentration of nodes and few wandering monsters, so they’re reasonably safe areas to harvest.
In Zek there are two or three spots which make great harvesting sites. The area around the stockade is reasonably safe but has a low node concentration. Quite close by is a large open area with very few aggressive creatures, and in the north-western part of the map is a large grassy area which is also a good spot.
The enclosed area next to Spirit Lake is another great place as long as you’re on the look-out for the snakes that roam in the area. This space also contains a node which frequently spawns glowing shards and unscathed bones of all types, as well as the occasional enchanted bone.