A large and dangerous boar was living on Mount Erymanthos. Eurystheus ordered Herakles to catch this boar. On Mount Erymanthos, Herakles forced the boar from the wood with his shouts. He then drove the boar into deep snow and jumped on its back. He put the boar in chains, placed it on his shoulders, and took it to Eurystheus. The king was so scared he hid in his bronze jar. Herakles left the boar in the market square of Tiryns. He then joined the Argonauts on the Quest for the Golden Fleece.
Mount Erymanthos took its name from a son of Apollo. Aphrodite blinded him because he saw her taking a bath. Apollo was angry. He turned himself into a boar and killed her boyfriend Adonis.
Eurystheus ordered Herakles to bring him the Horses of King Diomedes of Thrace. King Diomedes' horses were savage man-eaters, and were fed on the flesh of Diomedes' innocent guests. Herakles and his friends sailed to the coast of Thrace. Having found the stables of Diomedes, they killed the king's servants. They then put Diomedes before the horses. The animals tore him to pieces and ate him. The horses grew calm after feeding, and were led to the ship. Herakles sent them to Eurystheus.
Diomedes was the son of Ares, the god of war, and the king of the Bistones, a Thracian tribe of warlike people. While travelling in connection with this Labor, Herakles visited King Admetos. His wife Alcestis had just died. Herakles wrestled Death for Alcestis and he won. Alcestis was returned to life. This event is the basis for Euripides' play "Alcestis". Eurystheus dedicated the savage horses to Hera. They were said to have bred into the age of Alexander the Great.
Another story says Herakles captured the horses and drove them to his ship. Diomedes and his men chased the thieves. Herakles and his friends left the ship to fight the king and his men. The horses of Diomedes were left in the care of Abderos, Herakles' male lover. The horses ate him. Herakles built the city of Abdera in his memory. It was after this Labor that Herakles joined the Quest for the Golden Fleece. He dropped out of the search when his lover Hylas was lost on a strange island. Some say Herakles went on to Kolchis and rejoined the Quest. Others say he returned to Tiryns and the Labors.
Geryon was a very strong giant with three bodies, six hands, and three heads. He was the King of Tartessus in Spain. He had wings, and the picture on his shield was an eagle. He lived on an island called Erytheia. This island was far to the west in Okeanos, the river that circles the Earth. At night, the Sun sailed upon this river in a Golden Cup.
Geryon had large herds of cattle. They were watched over by Eurytion, Geryon's servant, and a huge two-headed dog named Orthrus, the offspring of Typhon and Echidna. King Eurystheus ordered Herakles to capture Geryon's cattle.
Herakles crossed the Libyan desert. At the narrow channel that separates Europe and Africa, he built the Pillars of Herakles. The Sun was hot and Herakles threatened to shoot him with his bow and arrows. The Sun asked him not to do this. Herakles agreed. He borrowed the Sun's Golden Cup and sailed away in it. The Titan Oceanus tested Herakles' seamanship by causing violent waves. Herakles threatened to shoot Oceanus, too. Oceanus calmed the waves. Some say Herakles sailed in an urn and used his lion skin as a sail.
On Geryon's island, Herakles killed the two-headed dog Orthos and the servant Eurytion, who tried to help the dog. Herakles was driving the cattle to the Golden Cup when Geryon appeared, ready to fight. Herakles shot him down and sailed away with the cattle. Herakles had many adventures on his return to Greece. On the Greek coast, Hera sent gadflies to drive the herd of cattle far and wide. Herkales managed to round-up a few and these he presented to Eurystheus. He sacrificed them to Hera.
Hera received golden apples as a gift when she married. She planted them in her garden far to the west near Mount Atlas. It was on this mountain that the Titan Atlas held the sky on his shoulders. He was being punished for having joined the other Titans in making war on Zeus. When Hera heard his daughters were stealing from the garden, she sent a one hundred-headed dragon called Ladon to the garden to protect the apples. Three nymphs called the Hesperides also guarded the apples.
Eurystheus wanted Herakles to bring him three golden apples. Herakles set off. The river god Nereus refused to give him directions and changed his shape again and again. Herakles tied him to a tree until he told the way. In the Caucasus, Herakles freed the Titan Prometheus, the fire-bringer, from his chains. Prometheus warned Herakles not to pick the apples himself, but to ask someone else to do it.
Herakles asked Atlas to pick the apples. The Titan agreed, but only if Herakles would kill the dragon and then take the sky on his shoulders. Herakles killed the dragon and took the sky on his shoulders. Atlas picked the apples but refused to take the sky again. He liked being free. Herakles tricked him. He asked Atlas to take the sky — only for a moment — while he put a cushion on his shoulders. Atlas took the sky. Herakles took the apples and headed for Tiryns. Eurystheus did not know what to do with the apples. He gave them to Herakles. Athena returned the apples to the garden, because they did, after all, belong to the gods.
Eurystheus ordered Herakles to bring him Kerberos, a three-headed dog-like monster with a dragon's tail and a mane of poisonous snakes. It guarded the entrance to the Underworld. The three heads could see the past, present, and future. Some say they represented birth, youth, and old age. Kerberos allowed the dead to enter the Underworld, but anyone who tried to leave was eaten. Kerberos was the offspring of Echidna, a monster part woman/part snake, and Typhon, a fire-breathing giant. Kerberos' brother was the two-headed dog Orthrus.
Herakles' first step was to undergo the Mysteries of Eleusis. These rites would protect him in the land of the dead. They would also cleanse him of the massacre of the Centaurs. Athena and Hermes guided Herakles into the Underworld. He was ferried across the River Styx in Charon's boat. On the opposite shore, he met the Gorgon, Medusa. She was a harmless phantom and he passed her without trouble. He met Meleagros and offered to marry his sister, Deianeira. Eventually, he did. When Herakles asked Hades for Kerberos, Hades allowed him to take the monster, but only if he could do so without using his weapons. Herakles wrestled the monster and choked it. Once the monster had yielded, he led it away.
As they neared the Earth's surface, Kerberos tossed his three heads because he hated the sunlight. His spit flew in all directions. From that spit grew the poisonous plant, aconite. When Heracles arrived in Tiryns, Eurystheus was performing a sacrifice. The king gave the best cuts of meat to his relatives and only a slave's portion of meat to Herakles. Herakles was furious with this insult and killed Eurystheus' three sons. Eurystheus was terrified when presented with Kerberos and hid in his bronze jar. Herakles took Kerberos back to the Underworld. Another account says the monster escaped. This Labor is the twelfth and last Labor in some accounts.
King Augeias of Elis lived on the west coast of the Peloponnese. He was a son of Helios, the sun god. It was said that the rays of the sun shone in his eyes. Augeias had many cattle. His animals were always healthy, and gave birth to many young. His stables had not been cleaned in years and were thick with animal waste. The valleys were also full of waste. The smell of this waste poisoned the land. Eurystheus ordered Herakles to clean the stables in a day. He liked the thought of Herakles doing such dirty work.