Heechee Rendezvous

"The Heechee are one of the great creations of science fiction."
Jack Williamson
After millennia had passed, Mankind discovered the Heechee legacy (an alien culture that fled to the reative safety of a black hole)--in particular an asteroid stocked with autonavigating spacecraft. Robinette Broadhead, who had led the expedition that unlocked the many secrets of Heechee technology, is now forced once more to make a perilous voyage into space--where the Heechee are waiting. And this time the future of Man is at stake....
A SCIENCE FICTION BOOK CLUB SELECTION
THE HEECHEE SAGA
Book One: GATEWAY
Book Two: BEYOND THE BLUE EVENT HORIZON
Book Three: HEECHEE RENDEZVOUS
Book Four: THE ANNALS OF THE HEECHEE