The Burnt Band at Ramgarh: Dating a Destruction Layer
Trench 3 at the Ramgarh mound in Hadoti produced a clear sequence. Layer 5 held 212 sherds of Northern Black Polished Ware and 47 punch-marked coins. Above it, a 0.30 m burnt band (Layer 4) contained three copper coins attributable to Kanishka, a broken Brahmi inscription naming a mahakshatrapa and a senapati, and charcoal dated by radiocarbon to 1830±40 BP (uncalibrated). Layer 3 above the burning was sterile silt. A local newspaper has already reported that the site was 'destroyed by a Saka raid in 78 CE', and the district museum wants this on its label before the tourist season. The excavation committee has funds for one more four-week season and is divided: two members treat the burnt band as evidence of invasion, one argues for an accidental fire, and one for flood abandonment. No human remains or coin hoards have been found so far, and only 40 square metres have been excavated.
1. Using only the stratigraphy, the coins and the radiocarbon result, state the earliest date the burning can have and explain your reasoning.
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Apply the terminus post quem rule: a deposit cannot be earlier than the latest object securely sealed in it.
- The three copper coins, if they were lying in the burnt band and not in the interface above or below it, place the burning after the beginning of Kanishka's coinage, conventionally after about 127 CE. That alone makes the newspaper's 78 CE date impossible.
- The punch-marked coins and NBPW lie below the burning; they only give a broad earlier horizon and cannot date the fire.
- The radiocarbon result is a laboratory age, not a calendar date. Uncalibrated 1830±40 BP corresponds to roughly 120 CE before calibration, and after calibration it spans roughly the first to third century CE. On its own it cannot exclude 78 CE; the coins do that work.
- Caveat: coins are often residual or intrusive. Check whether the three coins came from the floor of the burnt structure, whether they are worn, and whether the inscription's palaeography agrees. If the coins are intrusive, the date collapses back to the radiocarbon bracket.
Conclusion: earliest defensible date is the early second century CE, and only if the coins are sealed in situ.
2. Evaluate the 'Saka invasion' explanation against accidental fire and flood abandonment. Which is best supported by the present evidence?
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The invasion hypothesis carries the heaviest evidential burden, because it adds an agent and an intention not required by the deposit.
What invasion would normally leave: weapons or armour in the destruction debris, human remains, hoards buried in haste, and contemporaneous destruction across several sites. None has been found in 40 square metres.
Accidental fire explains a 0.30 m burnt band over a building without any outside agent. It requires only that the burning be confined to one structure and that roof collapse, not a raiding party, produced the debris.
Flood abandonment is consistent with the sterile silt in Layer 3, but silt can also be wind-blown or simply abandonment debris. The test is whether the silt is water-laid and laminated, and whether it extends beyond the mound.
The honest judgement is that the evidence proves destruction by fire of an occupied structure in the second century CE and nothing more. Because the trench is small, even a local fire cannot be distinguished from a regional event. The invasion label should be withdrawn until the site is opened laterally.
3. Design the single additional season of excavation and analysis that would most efficiently settle the question.
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Prioritise tests that can distinguish the three hypotheses rather than simply enlarging the hole.
- Open a 10 x 10 m trench across the burnt band to the mound edge, so that the lateral extent of burning is visible. A patchy, structure-bound burn favours accident; a horizon-wide burn favours a general destruction.
- Record the interface between Layers 3 and 4 in section, and sample the silt for grain size and laminations, to separate water-laid flood sediment from wind-blown or abandonment accumulation.
- Wet-sieve all burnt-band sediment for micro-debris: beads, arrowheads, burnt grain, bone. Float samples for seeds to establish what was stored at the moment of burning.
- Take paired radiocarbon samples from below and within the burnt band to tighten the bracket, and send the three coins for numismatic verification.
- Survey contemporary sites within about 20 km to see whether occupation ends everywhere at the same horizon; if only Ramgarh burns, invasion becomes even less likely.
This package tests agency, extent and chronology within one season, and each result discriminates between the rival explanations.