Route 10 (Japanese: 10番道路Route 10) is a route in western Kalos, connecting Geosenge Town and Cyllage City. The route is also known as Menhir Trail (Japanese: メンヒルロードMenhir Road).
Route 10 is a route between Geosenge Town and Cyllage City. It is lined with mysterious stones (based on the Carnac stones), which are actually the graves of Pokémon who were sacrificed 3,000 years ago in order for their life forces to energize the ultimate weapon that was used by AZ to end the war. The stones, as noted by researchers such as Colress, usually put out energy. However, when the ultimate weapon is fully activated, that reverses and they begin to absorb energy from Pokémon.
During the invasion of the Team Flare Secret HQ in Geosenge Town, Route 10 is completely closed to access. One Team Flare member says that the player should not be exposed to the sights taking place there, presumably with the stones in the area. After the ultimate weapon is destroyed, it is revealed that Tierno and others were fighting Team Flare in the area.
A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.
Route 10 made its first appearance in A Battle by Any Other Name!. Ash and his friends visited a town located along the route, which featured a Poké Puff-making competition that Serena entered. Surrounding the town is a forest made up of mostly Berry trees. Past the town is Calanthe Town, as shown in To Find a Fairy Flower!. There is a plain near the town where Fairy Flowers held by Flabébé is known to grown. Brackish Town is located after Calanthe Town, as shown in The Bonds of Evolution. The town is famous for its chocolate cake. It has a large stadium where Diantha had an exhibition match. Past that town is another town, as shown in Heroes - Friends and Faux Alike!. The town is surrounded by forest, but there is also some rocky hills. In Mega Revelations!, a large canyon is shown to be located within the forest.
In the manga
Route 10 in Pokémon AdventuresThe ancient Absorber in Pokémon Adventures
In the Pokémon Adventures manga
Route 10 first appeared in Zygarde Appears. After the initial activation of the ultimate weapon was stopped by X and his friends, Xerosic discovered that the stones lining the area were actually an ancient form of the Absorber used by AZ when he first used the ultimate weapon. With the other Absorber destroyed when Xerneas awakened from its dormant tree form, Xerosic decided to use the stones as a replacement to refuel the ultimate weapon with Pokémon life energy.
Later, several Team Flare Grunts lined up the stones with Pokémon captured from Pokémon Village. Before they could finish their job of absorbing the life energy of the captive Pokémon, however, they were attacked by Viola, Alexa, Clemont, Bonnie, and Yvette, who had learned of Team Flare's plans and had arrived to free the Pokémon they had captured. With the Gym Leaders taking down their reinforcement forces, the Team Flare members on Route 10 were soon defeated, despite the support of Malva's Delphox.
Trivia
A Backpacker here mentions Colress once telling him about the mysterious energy emitted by the stones on this route.
After being defeated, Psychic Robert says that the player's Pokémon's "power levels" are "over 9,000 for sure," making a reference to the memetic phrase from the Dragon Ball anime series.