They are a Catholic community dedicated to a life of prayer and Eucharistic Adoration. Here is what the site says:
I found this website of the Marionite Monks. I am glad to have found them for I have never heard of them before.
The Maronite Monks of Most Holy Trinity Monastery are a Catholic community of contemplative monks dedicated to a life of prayer and Eucharistic Adoration—a life of religious reparation and penance for souls—that is, for our brothers and sisters in the world, especially those in most need of our prayers. We are a cloistered, contemplative community in which there is an harmonious fusion of cenobitic and eremitical living. This life of adoration and penance overflows to others by making possible to all God’s People in the local community the opportunity for:
Adoration of the Blessed Sacrament
Sharing in the Liturgy of Divine Office
Participating in the Divine Liturgy of the Mass