Russia says Georgia is massing troops and weapons in the steep-sided valley of the Kodori Gorge ready to attack the separatist Abkhazia region, but it does not feel like a place preparing for battle.

On-duty policeman Rozman Loladze and his partner were making plans yesterday to hunt mountain goats with their Kalashnikov rifles. They reconsidered, and stopped off instead at a friend's house for a few shots of vodka and some khachapuri cheese bread.

The remote Kodori Gorge has become the focus for a sharp escalation in tension between Russia and Georgia that has left Western diplomats worrying that it would only take a small spark to ignite a renewed armed conflict.

Russia alleged Tbilisi had brought in extra troops including defence ministry forces, 122-mm field guns, mortars and supplies to mount an operation against the Moscow-backed separatists in Abkhazia. Moscow cited that as its reason for sending in hundreds of extra peacekeeping troops to the region, a deployment that prompted expressions of concern from Georgia's allies in the European Union, Nato and the US.

A Reuters reporter and photographer spent two days this week in the upper part of the Kodori Gorge, the only area of Abkhazia controlled by Tbilisi. Officials made no attempt to impose restrictions on their movements.

The only forces they saw were regular police, interior ministry troops and interior ministry special forces. These units have been operating in the region for two years as part of what Tbilisi said was a law enforcement effort.

The interior ministry troops and special forces were dressed in camouflage uniforms marked with the ministry's initials, and armed with Kalashnikov rifles. The only other equipment in evidence were police patrol vehicles, a handful of Kamaz trucks, and several Soviet-designed UAZ off-road vehicles and Toyota Hilux pickup trucks.

All were marked with interior ministry insignia and none had the black and white licence plates that are standard issue for Georgian defence ministry vehicles.

Moscow says there are over 1,500 armed men in the area. Soso Karchaidze, a head of the local police, said there were 450.

"There has been no change in the number of men," he said. "There are no armed forces (attached to the defence ministry) here at all."

The upper Kodori Gorge has been on the front line of a tense standoff between Georgia and Russia since the end of a separatist conflict in which the separatists threw off Tbilisi's control over all but this corner of the region.

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