The eggs are located on a tall pillar which you can get to by using the springer jump from lower pillars. Alternatively, you can go back to the griffon roost for warmed egg and just fly across to here, which is my favourite method. You can either enter the Sanctum of Nabkha area and just use Springer High Vault to climb the rocks near the mastery insight to get you high enough to glide over to the giant floating platform. There are a couple ways to reach this egg. Make one more jump use your springer to reach the nest. This should put you in a position where you can see the griffon nest. Then from that little rock, you are going to use the springer to get to the bigger rock that is just across and slightly above. From the hero point, use your springer mount to jump on top of this little rock right above it. Go all the way up until you are at the hero point. When you arrive at the bottom of the Teratohedron, follow the slanted pathway up that is filled with branded lightning strikes. You can find this egg atop the Teratohedron which is in the Maculate Fringe area. You can fly to here from Warmed Coastal Griffon Egg using the griffon or just glide here.It is on top of a mesa overlooking Hatari Tablelands. This is a griffon roost so you can ride the griffon to the next egg location. You can get up with springer mount High Vault ability.

This Griffon egg is on top of a very high rock/cliff not too far from entrance to Desert Highlands. Purchased from Priestess Karima who is the heart vendor east of Amnoon. Purchased from Priest Hakim who is the heart vendor by Temple of Kormir Waypoint. The rune will be inside the event reward pop up chest. You can just camp the bounty boards in Destiny’s Gorge and hope he pops up soon.

You need to catch the Corrupted Facet legendary bounty which spawns NE of the map near the Teratohedron.

Sand of time mount