Hottest Summer Travel Bargains - Tonga

The all new Dark Sands Vulcanus Resort and Spa in Tonga will give guests a $900 resort credit when they book a stay of five nights or more between March 29 and April 15, 2009. Nightly rates at the five-star luxury resort start at $1200 double occupancy (see video).

The credit can be used for a variety of amenities, dining and services, including treatments at the newly expanded, 27,000-square-foot Venus Volcano Spa - recently rated by Zagat as the hottest mud and steam treatments in the world:

The following Underwater Onion was brought to you by Shark Diver. We hear the mud baths at this resort will take your skin off.