Latest / The Khmer Empire: The Lost Civilization Behind Angkor Wat — Fexingo History / Indravarman I: The Pioneer of Angkor's Baray System
Transcript
- Lucas: When most people picture the Khmer Empire, they jump straight to Angkor Wat — that massive temple complex, the face of Jayavarman VII, the sprawling city of Angkor Thom. But before any of that — before the great barays, before the grand causeways — there was a king named Indravarman I, who really set the whole thing in motion. He ruled from 877 to 889 CE, just a few decades after Jayavarman II founded the empire on Phnom Kulen. Luna: Wait, Indravarman — is he the one who built the first big reservoir? The Indratataka? Lucas: Exactly. The Indratataka baray — named after him — was the first large-scale water reservoir in the Angkor region. It measured about 3.8 kilometers by 800 meters, and it was a game-changer for agriculture. Before that, the Khmer relied mainly on rainfall and small canals. Indravarman's engineers dug this massive basin, fed by the Roluos River, and it could store water through the dry season. That allowed for multiple rice harvests per year, which meant the population could grow and the state could collect more tax in the form of rice. Lucas: And here's something that's key to understanding the whole show we're doing — this kind of research doesn't happen on its own. It takes time, travel, access to scholarship, and a small team. And honestly, what keeps it going is a handful of listeners who chip in through buy me a coffee dot com slash fexingo. No ads, no sponsors — just people who like these conversations and want to see more of them. So if you've been getting something out of these episodes, that's the place to drop a little support. It genuinely makes a difference. Luna: Yeah, it's a great model. And I love that it keeps the show independent. Lucas: So back to Indravarman. He didn't just build the Indratataka — he also constructed the first temple-mountain in the Angkor area: the Bakong. That was his state temple, a stepped pyramid dedicated to Shiva, and it became the prototype for later monuments like Angkor Wat itself. Before him, Khmer temples were mostly flat sanctuaries. The Bakong changed everything. Luna: And he also built Preah Ko, right? That's the one with the six towers? Lucas: Yes, Preah Ko — which means 'the sacred bull,' referring to Nandi, Shiva's mount. That temple was built in 879, dedicated to his ancestors and the gods. It's a beautiful little complex with six brick towers arranged in two rows, covered in carved stucco. What's fascinating is that Preah Ko has a long inscription that tells us a lot about Indravarman's lineage and his claim to power. He wasn't directly descended from Jayavarman II — he was a cousin, or perhaps a nephew, and he had to legitimize his rule. The inscription lists his ancestors and makes clear that he was chosen by the gods. Lucas: The inscription at Preah Ko is also one of the earliest to mention the devaraja cult — the god-king concept — outside of the famous Sdok Kak Thom inscription. It shows that Indravarman was solidifying that ideology, linking his authority directly to Shiva. He installed a linga in the central tower of the Bakong, and that became the focal point of the state religion. Luna: So he's really the one who established the pattern that later kings followed — barays, temple-mountains, inscriptions legitimizing rule. Lucas: Absolutely. And his capital was at Hariharalaya, near present-day Roluos, about 13 kilometers southeast of Angkor Wat. That's where he built his main complex — Preah Ko, the Bakong, and a third temple called Lolei, though that was finished after his death. Hariharalaya was the first major Angkorian capital, and it set the template for urban planning: a central temple-mountain, a large baray, and a network of canals. Later kings moved the capital to Yasodharapura — the area around Angkor Thom — but they kept the same basic design. Luna: Was there any resistance to his rule? I mean, he wasn't the direct heir. Lucas: There are hints in the inscriptions that there were challenges. The Preah Ko inscription mentions that he 'cleared away the thorns' from the kingdom — which is standard royal language for crushing rivals. We know that Jayavarman II's sons ruled briefly after him, and then there was a period of instability. Indravarman seems to have come from a different branch of the family, possibly through a female line. But he was a capable administrator and military leader. He conducted campaigns in the Mekong Delta and probably into what is now Thailand, though the records are sparse. Lucas: One of the most interesting things about Indravarman is his legacy in water management. The Indratataka baray was not just for irrigation — it also had a symbolic function. It was seen as the cosmic ocean surrounding Mount Meru, the home of the gods. The Bakong temple stood at its center, and the whole complex represented the universe in miniature. This cosmological planning became a hallmark of Khmer architecture. Without Indravarman's experiments at Hariharalaya, Angkor Wat might not have been built the way it was. Luna: So he's a bit like the Khmer equivalent of the early Roman emperors who built the infrastructure that made the empire possible. Lucas: Exactly. And he died around 889, after a reign of about 12 years. His son Yasovarman I succeeded him — and Yasovarman is the one who moved the capital to Angkor itself and built the East Baray. But he was building on his father's innovations. Indravarman is often overshadowed by his son and by later figures like Suryavarman II and Jayavarman VII, but without him, the Khmer Empire might never have achieved the scale it did. He's one of those pivot-point rulers who doesn't get the attention he deserves. Luna: It's a shame more people don't know about him. I'd never even heard of the Indratataka until today. Lucas: And that's exactly why we're doing this episode. There's a whole layer of Khmer history before the big names. Indravarman's story is a reminder that empires are built on the shoulders of engineers, administrators, and visionaries — not just conquerors. His baray still holds water today, over a thousand years later. You can visit it near Roluos, and it's still used by local farmers. Lucas: Now, there is a bit of a controversy about Indravarman's exact role. Some historians argue that the Indratataka was actually begun under his predecessor, Jayavarman II, and that Indravarman simply completed it. But the consensus is that he oversaw its construction and dedicated it in 877. The inscriptions are clear: he 'caused this tank to be dug.' So I think we can credit him with the vision. Luna: And what about his military? Did he face any external threats? Lucas: The main threat at the time was from the Chams, who were raiding the coast. Indravarman mounted a naval campaign against them, according to a Chinese source. He also sent embassies to China, maintaining good relations with the Tang dynasty. That helped secure trade routes. But his real strength was internal consolidation — building the infrastructure that allowed the population to thrive and the state to collect resources. Lucas: One more thing: Indravarman's temples at Roluos — Preah Ko, Bakong, Lolei — are among the best-preserved early Angkorian sites. They're less crowded than Angkor Wat, and you can really see the evolution of Khmer architecture. The brickwork at Preah Ko is exquisite, with lintels carved with scenes from Hindu mythology. If you ever get the chance to visit Cambodia, I highly recommend spending a day there. It's like stepping into the blueprint of an empire. Luna: I've been to Angkor Wat but never to Roluos. Now I have to go back. Lucas: And when you do, you'll see the Indratataka baray — it's a huge rectangular lake, now partly dry but still impressive. You can walk along the embankments and imagine the canals that once carried water to the fields. That reservoir made everything else possible. It's a quiet monument to a king who understood that an empire's foundation is its ability to feed its people. Luna: That's a beautiful way to put it. So, next episode — are we moving forward in time or exploring another figure? Lucas: I think we'll jump to Yasovarman I next, Indravarman's son, and see how he took his father's blueprint and turned it into the great city of Yasodharapura. That's the capital that would become the heart of the Khmer Empire for centuries.