Divers at Laos cave to continue search for two men thought to be trapped further down

Two of the divers were seen smiling and recovering in hospital. (Supplied: Rescue Volunteer for People Laos)

After five men were rescued from deep inside a flooded cave in central Laos, search efforts continue for two people thought to still be trapped inside.

Rescue teams have been pumping water from flooded sections of the tunnel to get a clearer understanding of the cave.

A caving team is in the tunnel now, assessing the water level while specialist divers plan the search.

Specialist divers remain at the site of a cave in Central Laos, as search efforts continue for two people thought to still be trapped inside.

The remaining four men from a group of five villagers were freed from the flooded cave on Saturday evening, in extraordinary and emotional scenes.

Rescue teams had been pumping water from flooded sections of the tunnel for days to try to drain it, to allow the men to escape.

Laos officials believe two other men may still be missing in the cave, although rescue crews say they have explored most of the tunnels and have not found any survivors or bodies.

That draining appeared to have worked on Saturday evening, when the four villagers emerged from the tunnel.

South Australian cave diver Josh Richards had been preparing to go into the section of the cave where the men were trapped, to bring them additional supplies and assess the water level, when they emerged.

The fifth member of the group was rescued on Friday evening, in a daring rescue that involved putting a breathing regulator on him and navigating him through a narrow, flooded section of cave.

Pictures posted by a Laos-based volunteer rescue group show the men recovering in a health clinic, following emotional reunions with family.

The men can be seen smiling and in good spirits, while sitting upright in their beds and receiving fluids through intravenous drips.

The social media post said the men were visited by local officials, as well as members of the diving team that helped them to get out.

The men were seen smiling and in good spirits in hospital. (Facebook: Norrased "Benz" Palasing)

The group of five had entered the abandoned mine in Central Laos's Xaisomboun province around June 20, fossicking for gold.

They were trapped in the cave when monsoonal rain triggered flash flooding and landslides that blocked their way out.

They were found on Wednesday after they'd been missing for a week, when Finnish diver Mikko Passi and Thai diver Norrased "Benz" Palasing managed to make it through the flooded section of the cave.

Both men worked on the 2018 rescue of a Thai junior